moved the entire network to triple ===. Bugs arise in scaling

lib/network/Images.js

@@ -22,7 +22,7 @@ Images.prototype.load = function(url, brokenUrl) {
     img = new Image();
     img.onload = function () {
       // IE11 fix -- thanks dponch!
-      if (this.width == 0) {
+      if (this.width === 0) {
         document.body.appendChild(this);
         this.width = this.offsetWidth;
         this.height = this.offsetHeight;

lib/network/Network.js

@@ -382,7 +382,7 @@ Network.prototype.storePositions = function() {
 Network.prototype.getPositions = function(ids) {
   var dataArray = {};
   if (ids !== undefined) {
-    if (Array.isArray(ids) == true) {
+    if (Array.isArray(ids) === true) {
       for (var i = 0; i < ids.length; i++) {
         if (this.body.nodes[ids[i]] !== undefined) {
           var node = this.body.nodes[ids[i]];
@@ -473,13 +473,13 @@ Network.prototype.getConnectedNodes = function(nodeId) {
     var nodeObj = {nodeId : true}; // used to quickly check if node already exists
     for (var i = 0; i < node.edges.length; i++) {
       var edge = node.edges[i];
-      if (edge.toId == nodeId) {
+      if (edge.toId === nodeId) {
         if (nodeObj[edge.fromId] === undefined) {
           nodeList.push(edge.fromId);
           nodeObj[edge.fromId] = true;
         }
       }
-      else if (edge.fromId == nodeId) {
+      else if (edge.fromId === nodeId) {
         if (nodeObj[edge.toId] === undefined) {
           nodeList.push(edge.toId)
           nodeObj[edge.toId] = true;

lib/network/dotparser.js

@@ -178,7 +178,7 @@ function addNode(graph, node) {
     if (!g.nodes) {
       g.nodes = [];
     }
-    if (g.nodes.indexOf(current) == -1) {
+    if (g.nodes.indexOf(current) === -1) {
       g.nodes.push(current);
     }
   }
@@ -238,7 +238,7 @@ function getToken() {
   token = '';
 
   // skip over whitespaces
-  while (c == ' ' || c == '\t' || c == '\n' || c == '\r') {  // space, tab, enter
+  while (c === ' ' || c === '\t' || c === '\n' || c === '\r') {  // space, tab, enter
     next();
   }
 
@@ -246,13 +246,13 @@ function getToken() {
     var isComment = false;
 
     // skip comment
-    if (c == '#') {
+    if (c === '#') {
       // find the previous non-space character
       var i = index - 1;
-      while (dot.charAt(i) == ' ' || dot.charAt(i) == '\t') {
+      while (dot.charAt(i) === ' ' || dot.charAt(i) === '\t') {
         i--;
       }
-      if (dot.charAt(i) == '\n' || dot.charAt(i) == '') {
+      if (dot.charAt(i) === '\n' || dot.charAt(i) === '') {
         // the # is at the start of a line, this is indeed a line comment
         while (c != '' && c != '\n') {
           next();
@@ -260,17 +260,17 @@ function getToken() {
         isComment = true;
       }
     }
-    if (c == '/' && nextPreview() == '/') {
+    if (c === '/' && nextPreview() === '/') {
       // skip line comment
       while (c != '' && c != '\n') {
         next();
       }
       isComment = true;
     }
-    if (c == '/' && nextPreview() == '*') {
+    if (c === '/' && nextPreview() === '*') {
       // skip block comment
       while (c != '') {
-        if (c == '*' && nextPreview() == '/') {
+        if (c === '*' && nextPreview() === '/') {
           // end of block comment found. skip these last two characters
           next();
           next();
@@ -284,14 +284,14 @@ function getToken() {
     }
 
     // skip over whitespaces
-    while (c == ' ' || c == '\t' || c == '\n' || c == '\r') {  // space, tab, enter
+    while (c === ' ' || c === '\t' || c === '\n' || c === '\r') {  // space, tab, enter
       next();
     }
   }
   while (isComment);
 
   // check for end of dot file
-  if (c == '') {
+  if (c === '') {
     // token is still empty
     tokenType = TOKENTYPE.DELIMITER;
     return;
@@ -317,7 +317,7 @@ function getToken() {
 
   // check for an identifier (number or string)
   // TODO: more precise parsing of numbers/strings (and the port separator ':')
-  if (isAlphaNumeric(c) || c == '-') {
+  if (isAlphaNumeric(c) || c === '-') {
     token += c;
     next();
 
@@ -325,10 +325,10 @@ function getToken() {
       token += c;
       next();
     }
-    if (token == 'false') {
+    if (token === 'false') {
       token = false;   // convert to boolean
     }
-    else if (token == 'true') {
+    else if (token === 'true') {
       token = true;   // convert to boolean
     }
     else if (!isNaN(Number(token))) {
@@ -339,11 +339,11 @@ function getToken() {
   }
 
   // check for a string enclosed by double quotes
-  if (c == '"') {
+  if (c === '"') {
     next();
-    while (c != '' && (c != '"' || (c == '"' && nextPreview() == '"'))) {
+    while (c != '' && (c != '"' || (c === '"' && nextPreview() === '"'))) {
       token += c;
-      if (c == '"') { // skip the escape character
+      if (c === '"') { // skip the escape character
         next();
       }
       next();
@@ -376,19 +376,19 @@ function parseGraph() {
   getToken();
 
   // optional strict keyword
-  if (token == 'strict') {
+  if (token === 'strict') {
     graph.strict = true;
     getToken();
   }
 
   // graph or digraph keyword
-  if (token == 'graph' || token == 'digraph') {
+  if (token === 'graph' || token === 'digraph') {
     graph.type = token;
     getToken();
   }
 
   // optional graph id
-  if (tokenType == TOKENTYPE.IDENTIFIER) {
+  if (tokenType === TOKENTYPE.IDENTIFIER) {
     graph.id = token;
     getToken();
   }
@@ -429,7 +429,7 @@ function parseGraph() {
 function parseStatements (graph) {
   while (token !== '' && token != '}') {
     parseStatement(graph);
-    if (token == ';') {
+    if (token === ';') {
       getToken();
     }
   }
@@ -464,7 +464,7 @@ function parseStatement(graph) {
   var id = token; // id can be a string or a number
   getToken();
 
-  if (token == '=') {
+  if (token === '=') {
     // id statement
     getToken();
     if (tokenType != TOKENTYPE.IDENTIFIER) {
@@ -488,20 +488,20 @@ function parseSubgraph (graph) {
   var subgraph = null;
 
   // optional subgraph keyword
-  if (token == 'subgraph') {
+  if (token === 'subgraph') {
     subgraph = {};
     subgraph.type = 'subgraph';
     getToken();
 
     // optional graph id
-    if (tokenType == TOKENTYPE.IDENTIFIER) {
+    if (tokenType === TOKENTYPE.IDENTIFIER) {
       subgraph.id = token;
       getToken();
     }
   }
 
   // open angle bracket
-  if (token == '{') {
+  if (token === '{') {
     getToken();
 
     if (!subgraph) {
@@ -548,21 +548,21 @@ function parseSubgraph (graph) {
  */
 function parseAttributeStatement (graph) {
   // attribute statements
-  if (token == 'node') {
+  if (token === 'node') {
     getToken();
 
     // node attributes
     graph.node = parseAttributeList();
     return 'node';
   }
-  else if (token == 'edge') {
+  else if (token === 'edge') {
     getToken();
 
     // edge attributes
     graph.edge = parseAttributeList();
     return 'edge';
   }
-  else if (token == 'graph') {
+  else if (token === 'graph') {
     getToken();
 
     // graph attributes
@@ -599,7 +599,7 @@ function parseNodeStatement(graph, id) {
  * @param {String | Number} from        Id of the from node
  */
 function parseEdge(graph, from) {
-  while (token == '->' || token == '--') {
+  while (token === '->' || token === '--') {
     var to;
     var type = token;
     getToken();
@@ -638,7 +638,7 @@ function parseEdge(graph, from) {
 function parseAttributeList() {
   var attr = null;
 
-  while (token == '[') {
+  while (token === '[') {
     getToken();
     attr = {};
     while (token !== '' && token != ']') {
@@ -767,7 +767,7 @@ function DOTToGraph (data) {
         to: dotEdge.to
       };
       merge(graphEdge, dotEdge.attr);
-      graphEdge.style = (dotEdge.type == '->') ? 'arrow' : 'line';
+      graphEdge.style = (dotEdge.type === '->') ? 'arrow' : 'line';
       return graphEdge;
     }
 

lib/network/gephiParser.js

@@ -42,7 +42,7 @@ function parseGephi(gephiJSON, options) {
     node['x'] = gNode.x;
     node['y'] = gNode.y;
     node['label'] = gNode.label;
-    if (this.options.nodes.parseColor == true) {
+    if (this.options.nodes.parseColor === true) {
       node['color'] = gNode.color;
     }
     else {

lib/network/modules/CanvasRenderer.js

@@ -50,7 +50,7 @@ class CanvasRenderer {
   startRendering() {
     if (this.renderingActive === true) {
       if (!this.renderTimer) {
-        if (this.requiresTimeout == true) {
+        if (this.requiresTimeout === true) {
           this.renderTimer = window.setTimeout(this.renderStep.bind(this), this.simulationInterval); // wait this.renderTimeStep milliseconds and perform the animation step function
         }
         else {
@@ -67,14 +67,14 @@ class CanvasRenderer {
     // reset the renderTimer so a new scheduled animation step can be set
     this.renderTimer = undefined;
 
-    if (this.requiresTimeout == true) {
+    if (this.requiresTimeout === true) {
       // this schedules a new simulation step
       this.startRendering();
     }
 
     this._redraw();
 
-    if (this.requiresTimeout == false) {
+    if (this.requiresTimeout === false) {
       // this schedules a new simulation step
       this.startRendering();
     }

lib/network/modules/Clustering.js

@@ -30,7 +30,7 @@ class ClusterEngine {
     if (hubsize === undefined) {
       hubsize = this._getHubSize();
     }
-    else if (tyepof(hubsize) == "object") {
+    else if (tyepof(hubsize) === "object") {
       options = this._checkOptions(hubsize);
       hubsize = this._getHubSize();
     }
@@ -69,7 +69,7 @@ class ClusterEngine {
     for (var i = 0; i < this.body.nodeIndices.length; i++) {
       var nodeId = this.body.nodeIndices[i];
       var clonedOptions = this._cloneOptions(nodeId);
-      if (options.joinCondition(clonedOptions) == true) {
+      if (options.joinCondition(clonedOptions) === true) {
         childNodesObj[nodeId] = this.body.nodes[nodeId];
       }
     }
@@ -92,7 +92,7 @@ class ClusterEngine {
       var childNodesObj = {};
       var childEdgesObj = {};
       var nodeId = this.body.nodeIndices[i];
-      if (this.body.nodes[nodeId].edges.length == 1) {
+      if (this.body.nodes[nodeId].edges.length === 1) {
         var edge = this.body.nodes[nodeId].edges[0];
         var childNodeId = this._getConnectedId(edge, nodeId);
         if (childNodeId != nodeId) {
@@ -102,11 +102,11 @@ class ClusterEngine {
           }
           else {
             var clonedOptions = this._cloneOptions(nodeId);
-            if (options.joinCondition(clonedOptions) == true) {
+            if (options.joinCondition(clonedOptions) === true) {
               childNodesObj[nodeId] = this.body.nodes[nodeId];
             }
             clonedOptions = this._cloneOptions(childNodeId);
-            if (options.joinCondition(clonedOptions) == true) {
+            if (options.joinCondition(clonedOptions) === true) {
               childNodesObj[childNodeId] = this.body.nodes[childNodeId];
             }
           }
@@ -165,7 +165,7 @@ class ClusterEngine {
         else {
           // clone the options and insert some additional parameters that could be interesting.
           var childClonedOptions = this._cloneOptions(childNodeId);
-          if (options.joinCondition(parentClonedOptions, childClonedOptions) == true) {
+          if (options.joinCondition(parentClonedOptions, childClonedOptions) === true) {
             childEdgesObj[edge.id] = edge;
             childNodesObj[childNodeId] = this.body.nodes[childNodeId];
           }
@@ -189,7 +189,7 @@ class ClusterEngine {
   */
   _cloneOptions(objId, type) {
     var clonedOptions = {};
-    if (type === undefined || type == 'node') {
+    if (type === undefined || type === 'node') {
       util.deepExtend(clonedOptions, this.body.nodes[objId].options, true);
       util.deepExtend(clonedOptions, this.body.nodes[objId].properties, true);
       clonedOptions.amountOfConnections = this.body.nodes[objId].edges.length;
@@ -277,7 +277,7 @@ class ClusterEngine {
   */
   _cluster(childNodesObj, childEdgesObj, options, refreshData = true) {
     // kill condition: no children so cant cluster
-    if (Object.keys(childNodesObj).length == 0) {return;}
+    if (Object.keys(childNodesObj).length === 0) {return;}
 
     // check if we have an unique id;
     if (options.clusterNodeProperties.id === undefined) {options.clusterNodeProperties.id = 'cluster:' + util.randomUUID();}
@@ -500,7 +500,7 @@ class ClusterEngine {
   */
   _connectEdge(edge, nodeId, from) {
     var clusterStack = this._getClusterStack(nodeId);
-    if (from == true) {
+    if (from === true) {
       edge.from = clusterStack[clusterStack.length - 1];
       edge.fromId = clusterStack[clusterStack.length - 1].id;
       clusterStack.pop()

lib/network/modules/ConfigurationSystem.js

@@ -443,7 +443,7 @@ class ConfigurationSystem {
     for (let i = 0; i < arr.length; i++) {
       let option = document.createElement('option');
       option.value = arr[i];
-      if (i == selectedValue) {
+      if (i === selectedValue) {
         option.selected = 'selected';
       }
       option.innerHTML = arr[i];

lib/network/modules/EdgesHandler.js

@@ -74,7 +74,7 @@ class EdgesHandler {
           drawThreshold: 3
         },
         customScalingFunction: function (min,max,total,value) {
-          if (max == min) {
+          if (max === min) {
             return 0.5;
           }
           else {
@@ -222,7 +222,7 @@ class EdgesHandler {
           this.options.font.face = optionsArray[1];
           this.options.font.color = optionsArray[2];
         }
-        else if (typeof options.font == 'object') {
+        else if (typeof options.font === 'object') {
           this.options.font = util.bridgeObject(options.font);
         }
         this.options.font.size = Number(this.options.font.size);

lib/network/modules/Groups.js

@@ -51,7 +51,7 @@ class Groups {
     if (options !== undefined) {
       for (let groupName in options) {
         if (options.hasOwnProperty(groupName)) {
-          if (optionFields.indexOf(groupName) == -1) {
+          if (optionFields.indexOf(groupName) === -1) {
             let group = options[groupName];
             this.add(groupName, group);
           }
@@ -77,7 +77,7 @@ class Groups {
    */
   get(groupname) {
     let group = this.groups[groupname];
-    if (group == undefined) {
+    if (group === undefined) {
       if (this.options.useDefaultGroups === false && this.groupsArray.length > 0) {
         // create new group
         let index = this.groupIndex % this.groupsArray.length;

lib/network/modules/InteractionHandler.js

@@ -124,7 +124,7 @@ class InteractionHandler {
     let previouslySelected = this.selectionHandler._getSelectedObjectCount() > 0;
     let selected = this.selectionHandler.selectOnPoint(pointer);
 
-    if (selected === true || (previouslySelected == true && selected === false)) { // select or unselect
+    if (selected === true || (previouslySelected === true && selected === false)) { // select or unselect
       this.body.emitter.emit('select', this.selectionHandler.getSelection());
     }
 
@@ -440,7 +440,7 @@ class InteractionHandler {
     }
 
     // if we bind the keyboard to the div, we have to highlight it to use it. This highlights it on mouse over.
-    if (this.options.keyboard.bindToWindow == false && this.options.keyboard.enabled === true) {
+    if (this.options.keyboard.bindToWindow === false && this.options.keyboard.enabled === true) {
       this.canvas.frame.focus();
     }
 
@@ -469,7 +469,7 @@ class InteractionHandler {
 
       // adding hover highlights
       let obj = this.selectionHandler.getNodeAt(pointer);
-      if (obj == undefined) {
+      if (obj === undefined) {
         obj = this.selectionHandler.getEdgeAt(pointer);
       }
       if (obj != undefined) {
@@ -479,7 +479,7 @@ class InteractionHandler {
       // removing all node hover highlights except for the selected one.
       for (let nodeId in this.hoverObj.nodes) {
         if (this.hoverObj.nodes.hasOwnProperty(nodeId)) {
-          if (obj instanceof Node && obj.id != nodeId || obj instanceof Edge || obj == undefined) {
+          if (obj instanceof Node && obj.id != nodeId || obj instanceof Edge || obj === undefined) {
             this.selectionHandler.blurObject(this.hoverObj.nodes[nodeId]);
             delete this.hoverObj.nodes[nodeId];
           }
@@ -509,7 +509,7 @@ class InteractionHandler {
       bottom: y
     };
 
-    let previousPopupObjId = this.popupObj === undefined ? "" : this.popupObj.id;
+    let previousPopupObjId = this.popupObj === undefined ? undefined : this.popupObj.id;
     let nodeUnderCursor = false;
     let popupType = "node";
 
@@ -537,7 +537,7 @@ class InteractionHandler {
       }
     }
 
-    if (this.popupObj === undefined && nodeUnderCursor == false) {
+    if (this.popupObj === undefined && nodeUnderCursor === false) {
       // search the edges for overlap
       let edgeIndices = this.body.edgeIndices;
       let edges = this.body.edges;
@@ -560,7 +560,7 @@ class InteractionHandler {
 
     if (this.popupObj !== undefined) {
       // show popup message window
-      if (this.popupObj.id != previousPopupObjId) {
+      if (this.popupObj.id !== previousPopupObjId) {
         if (this.popup === undefined) {
           this.popup = new Popup(this.frame, this.options.tooltip);
         }
@@ -601,7 +601,7 @@ class InteractionHandler {
     };
 
     let stillOnObj = false;
-    if (this.popup.popupTargetType == 'node') {
+    if (this.popup.popupTargetType === 'node') {
       if (this.body.nodes[this.popup.popupTargetId] !== undefined) {
         stillOnObj = this.body.nodes[this.popup.popupTargetId].isOverlappingWith(pointerObj);
 
@@ -609,7 +609,7 @@ class InteractionHandler {
         // we initially only check stillOnObj because this is much faster.
         if (stillOnObj === true) {
           let overNode = this.selectionHandler.getNodeAt(pointer);
-          stillOnObj = overNode.id == this.popup.popupTargetId;
+          stillOnObj = overNode.id === this.popup.popupTargetId;
         }
       }
     }

lib/network/modules/LayoutEngine.js

@@ -38,7 +38,7 @@ class LayoutEngine {
 
       if (this.options.hierarchical.enabled === true) {
         // make sure the level seperation is the right way up
-        if (this.options.hierarchical.direction == "RL" || this.options.hierarchical.direction == "DU") {
+        if (this.options.hierarchical.direction === "RL" || this.options.hierarchical.direction === "DU") {
           if (this.options.hierarchical.levelSeparation > 0) {
             this.options.hierarchical.levelSeparation *= -1;
           }
@@ -68,7 +68,7 @@ class LayoutEngine {
 
       // get the type of static smooth curve in case it is required
       let type = 'horizontal';
-      if (this.options.hierarchical.direction == "RL" || this.options.hierarchical.direction == "LR") {
+      if (this.options.hierarchical.direction === "RL" || this.options.hierarchical.direction === "LR") {
         type = 'vertical';
       }
 
@@ -102,10 +102,10 @@ class LayoutEngine {
           let radius = 10 * 0.1 * nodesArray.length + 10;
           let angle = 2 * Math.PI * this.seededRandom();
 
-          if (node.options.fixed.x == false) {
+          if (node.options.fixed.x === false) {
             node.x = radius * Math.cos(angle);
           }
-          if (node.options.fixed.x == false) {
+          if (node.options.fixed.x === false) {
             node.y = radius * Math.sin(angle);
           }
         }
@@ -124,7 +124,7 @@ class LayoutEngine {
    * @private
    */
   setupHierarchicalLayout() {
-    if (this.options.hierarchical.enabled == true && this.body.nodeIndices.length > 0) {
+    if (this.options.hierarchical.enabled === true && this.body.nodeIndices.length > 0) {
       // get the size of the largest hubs and check if the user has defined a level for a node.
       let node, nodeId;
       let definedLevel = false;
@@ -146,7 +146,7 @@ class LayoutEngine {
       }
 
       // if the user defined some levels but not all, alert and run without hierarchical layout
-      if (undefinedLevel == true && definedLevel == true) {
+      if (undefinedLevel === true && definedLevel === true) {
         throw new Error("To use the hierarchical layout, nodes require either no predefined levels or levels have to be defined for all nodes.");
         return;
       }
@@ -155,11 +155,11 @@ class LayoutEngine {
         //this._changeConstants();
 
         // define levels if undefined by the users. Based on hubsize
-        if (undefinedLevel == true) {
-          if (this.options.hierarchical.sortMethod == "hubsize") {
+        if (undefinedLevel === true) {
+          if (this.options.hierarchical.sortMethod === "hubsize") {
             this._determineLevelsByHubsize();
           }
-          else if (this.options.hierarchical.sortMethod == "directed" || "direction") {
+          else if (this.options.hierarchical.sortMethod === "directed" || "direction") {
             this._determineLevelsDirected();
           }
         }
@@ -189,7 +189,7 @@ class LayoutEngine {
           if (distribution[level].nodes.hasOwnProperty(nodeId)) {
 
             node = distribution[level].nodes[nodeId];
-            if (this.options.hierarchical.direction == "UD" || this.options.hierarchical.direction == "DU") {
+            if (this.options.hierarchical.direction === "UD" || this.options.hierarchical.direction === "DU") {
               if (node.x === undefined) {node.x = distribution[level].distance;}
               distribution[level].distance = node.x + this.nodeSpacing;
             }
@@ -222,7 +222,7 @@ class LayoutEngine {
     for (nodeId in this.body.nodes) {
       if (this.body.nodes.hasOwnProperty(nodeId)) {
         node = this.body.nodes[nodeId];
-        if (this.options.hierarchical.direction == "UD" || this.options.hierarchical.direction == "DU") {
+        if (this.options.hierarchical.direction === "UD" || this.options.hierarchical.direction === "DU") {
           node.y = this.options.hierarchical.levelSeparation * this.hierarchicalLevels[nodeId];
           node.options.fixed.y = true;
         }
@@ -274,13 +274,13 @@ class LayoutEngine {
     while (hubSize > 0) {
       // determine hubs
       hubSize = this._getHubSize();
-      if (hubSize == 0)
+      if (hubSize === 0)
         break;
 
       for (nodeId in this.body.nodes) {
         if (this.body.nodes.hasOwnProperty(nodeId)) {
           node = this.body.nodes[nodeId];
-          if (node.edges.length == hubSize) {
+          if (node.edges.length === hubSize) {
             this._setLevel(0, node);
           }
         }
@@ -304,7 +304,7 @@ class LayoutEngine {
     let childNode;
     this.hierarchicalLevels[node.id] = level;
     for (let i = 0; i < node.edges.length; i++) {
-      if (node.edges[i].toId == node.id) {
+      if (node.edges[i].toId === node.id) {
         childNode = node.edges[i].from;
       }
       else {
@@ -366,7 +366,7 @@ class LayoutEngine {
     this.hierarchicalLevels[node.id] = level;
 
     for (let i = 0; i < node.edges.length; i++) {
-      if (node.edges[i].toId == node.id) {
+      if (node.edges[i].toId === node.id) {
         childNode = node.edges[i].from;
         this._setLevelDirected(level - 1, childNode);
       }
@@ -393,7 +393,7 @@ class LayoutEngine {
     for (let i = 0; i < edges.length; i++) {
       let childNode = undefined;
       let parentNode = undefined;
-      if (edges[i].toId == parentId) {
+      if (edges[i].toId === parentId) {
         childNode = edges[i].from;
         parentNode = edges[i].to;
       }
@@ -405,7 +405,7 @@ class LayoutEngine {
       if (this.positionedNodes[childNode.id] === undefined) {
         // if a node is conneceted to another node on the same level (or higher (means lower level))!, this is not handled here.
         if (childNodeLevel > parentLevel) {
-          if (this.options.hierarchical.direction == "UD" || this.options.hierarchical.direction == "DU") {
+          if (this.options.hierarchical.direction === "UD" || this.options.hierarchical.direction === "DU") {
             if (childNode.x === undefined) {
               childNode.x = Math.max(distribution[childNodeLevel].distance, parentNode.x);
             }

lib/network/modules/ManipulationSystem.js

@@ -69,7 +69,7 @@ class ManipulationSystem {
    */
   setOptions(options) {
     if (options !== undefined) {
-      if (typeof options == 'boolean') {
+      if (typeof options === 'boolean') {
         this.options.enabled = options;
       }
       else {
@@ -207,7 +207,7 @@ class ManipulationSystem {
         data.x = node.x;
         data.y = node.y;
 
-        if (this.options.handlerFunctions.editNode.length == 2) {
+        if (this.options.handlerFunctions.editNode.length === 2) {
           this.options.handlerFunctions.editNode(data, (finalizedData) => {
             this.body.data.nodes.update(finalizedData);
             this.showManipulatorToolbar();
@@ -343,7 +343,7 @@ class ManipulationSystem {
 
     if (typeof deleteFunction === 'function') {
       let data = {nodes: selectedNodes, edges: selectedEdges};
-      if (deleteFunction.length == 2) {
+      if (deleteFunction.length === 2) {
         deleteFunction(data, (finalizedData) => {
           this.body.data.edges.remove(finalizedData.edges);
           this.body.data.nodes.remove(finalizedData.nodes);
@@ -799,7 +799,7 @@ class ManipulationSystem {
       }
       else {
         let from = this.body.nodes[this.temporaryIds.nodes[0]];
-        if (this.selectedControlNode.id == from.id) {
+        if (this.selectedControlNode.id === from.id) {
           this._performEditEdge(node.id, edge.to.id);
         }
         else {
@@ -943,7 +943,7 @@ class ManipulationSystem {
     };
 
     if (typeof this.options.handlerFunctions.addNode === 'function') {
-      if (this.options.handlerFunctions.addNode.length == 2) {
+      if (this.options.handlerFunctions.addNode.length === 2) {
         this.options.handlerFunctions.addNode(defaultData, (finalizedData) => {
           this.body.data.nodes.add(finalizedData);
           this.showManipulatorToolbar();
@@ -969,7 +969,7 @@ class ManipulationSystem {
   _performCreateEdge(sourceNodeId, targetNodeId) {
     let defaultData = {from: sourceNodeId, to: targetNodeId};
     if (this.options.handlerFunctions.addEdge) {
-      if (this.options.handlerFunctions.addEdge.length == 2) {
+      if (this.options.handlerFunctions.addEdge.length === 2) {
         this.options.handlerFunctions.addEdge(defaultData, (finalizedData) => {
           this.body.data.edges.add(finalizedData);
           this.selectionHandler.unselectAll();
@@ -995,7 +995,7 @@ class ManipulationSystem {
   _performEditEdge(sourceNodeId, targetNodeId) {
     let defaultData = {id: this.edgeBeingEditedId, from: sourceNodeId, to: targetNodeId};
     if (this.options.handlerFunctions.editEdge) {
-      if (this.options.handlerFunctions.editEdge.length == 2) {
+      if (this.options.handlerFunctions.editEdge.length === 2) {
         this.options.handlerFunctions.editEdge(defaultData, (finalizedData) => {
           this.body.data.edges.update(finalizedData);
           this.selectionHandler.unselectAll();

lib/network/modules/NodesHandler.js

@@ -78,7 +78,7 @@ class NodesHandler {
           drawThreshold: 3
         },
         customScalingFunction: function (min,max,total,value) {
-          if (max == min) {
+          if (max === min) {
             return 0.5;
           }
           else {

lib/network/modules/PhysicsEngine.js

@@ -104,12 +104,12 @@ class PhysicsEngine {
 
   init() {
     var options;
-    if (this.options.solver == "repulsion") {
+    if (this.options.solver === "repulsion") {
       options = this.options.repulsion;
       this.nodesSolver = new Repulsion(this.body, this.physicsBody, options);
       this.edgesSolver = new SpringSolver(this.body, this.physicsBody, options);
     }
-    else if (this.options.solver == "hierarchicalRepulsion") {
+    else if (this.options.solver === "hierarchicalRepulsion") {
       options = this.options.hierarchicalRepulsion;
       this.nodesSolver = new HierarchicalRepulsion(this.body, this.physicsBody, options);
       this.edgesSolver = new HierarchicalSpringSolver(this.body, this.physicsBody, options);
@@ -171,7 +171,7 @@ class PhysicsEngine {
     var physicsTime = Date.now() - startTime;
 
     // run double speed if it is a little graph
-    if ((physicsTime < 0.4 * this.simulationInterval || this.runDoubleSpeed == true) && this.stabilized === false) {
+    if ((physicsTime < 0.4 * this.simulationInterval || this.runDoubleSpeed === true) && this.stabilized === false) {
       this.physicsTick();
 
       // this makes sure there is no jitter. The decision is taken once to run it at double speed.
@@ -217,7 +217,7 @@ class PhysicsEngine {
       }
       else {
         // this is here to ensure that there is no start event when the network is already stable.
-        if (this.startedStabilization == false) {
+        if (this.startedStabilization === false) {
           this.body.emitter.emit("startStabilizing");
           this.startedStabilization = true;
         }
@@ -317,7 +317,7 @@ class PhysicsEngine {
     }
 
 
-    if (nodesPresent == true) {
+    if (nodesPresent === true) {
       if (vminCorrected > 0.5*this.options.maxVelocity) {
         return false;
       }
@@ -415,7 +415,7 @@ class PhysicsEngine {
    * @private
    */
   stabilize() {
-    if (this.options.stabilization.onlyDynamicEdges == true) {
+    if (this.options.stabilization.onlyDynamicEdges === true) {
       this._freezeNodes();
     }
     this.stabilizationSteps = 0;
@@ -425,13 +425,13 @@ class PhysicsEngine {
 
   _stabilizationBatch() {
     var count = 0;
-    while (this.stabilized == false && count < this.options.stabilization.updateInterval && this.stabilizationSteps < this.options.stabilization.iterations) {
+    while (this.stabilized === false && count < this.options.stabilization.updateInterval && this.stabilizationSteps < this.options.stabilization.iterations) {
       this.physicsTick();
       this.stabilizationSteps++;
       count++;
     }
   
-    if (this.stabilized == false && this.stabilizationSteps < this.options.stabilization.iterations) {
+    if (this.stabilized === false && this.stabilizationSteps < this.options.stabilization.iterations) {
       this.body.emitter.emit("stabilizationProgress", {steps: this.stabilizationSteps, total: this.options.stabilization.iterations});
       setTimeout(this._stabilizationBatch.bind(this),0);
     }
@@ -441,11 +441,11 @@ class PhysicsEngine {
   }
 
   _finalizeStabilization() {
-    if (this.options.stabilization.zoomExtent == true) {
+    if (this.options.stabilization.zoomExtent === true) {
       this.body.emitter.emit("zoomExtent", {duration:0});
     }
 
-    if (this.options.stabilization.onlyDynamicEdges == true) {
+    if (this.options.stabilization.onlyDynamicEdges === true) {
       this._restoreFrozenNodes();
     }
     

lib/network/modules/SelectionHandler.js

@@ -460,7 +460,7 @@ class SelectionHandler {
    * @private
    */
   blurObject(object) {
-    if (object.hover == true) {
+    if (object.hover === true) {
       object.hover = false;
       this.body.emitter.emit("blurNode",{node:object.id});
     }
@@ -474,7 +474,7 @@ class SelectionHandler {
    * @private
    */
   hoverObject(object) {
-    if (object.hover == false) {
+    if (object.hover === false) {
       object.hover = true;
       this._addToHover(object);
       if (object instanceof Node) {
@@ -508,7 +508,7 @@ class SelectionHandler {
    */
   getSelectedNodes() {
     var idArray = [];
-    if (this.options.select == true) {
+    if (this.options.select === true) {
       for (var nodeId in this.selectionObj.nodes) {
         if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
           idArray.push(nodeId);
@@ -526,7 +526,7 @@ class SelectionHandler {
    */
   getSelectedEdges() {
     var idArray = [];
-    if (this.options.select == true) {
+    if (this.options.select === true) {
       for (var edgeId in this.selectionObj.edges) {
         if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
           idArray.push(edgeId);
@@ -546,7 +546,7 @@ class SelectionHandler {
   selectNodes(selection, highlightEdges) {
     var i, iMax, id;
   
-    if (!selection || (selection.length == undefined))
+    if (!selection || (selection.length === undefined))
       throw 'Selection must be an array with ids';
   
     // first unselect any selected node
@@ -573,7 +573,7 @@ class SelectionHandler {
   selectEdges(selection) {
     var i, iMax, id;
   
-    if (!selection || (selection.length == undefined))
+    if (!selection || (selection.length === undefined))
       throw 'Selection must be an array with ids';
   
     // first unselect any selected node

lib/network/modules/View.js

@@ -77,7 +77,7 @@ class View {
       }
     }
 
-    if (minX == 1e9 && maxX == -1e9 && minY == 1e9 && maxY == -1e9) {
+    if (minX === 1e9 && maxX === -1e9 && minY === 1e9 && maxY === -1e9) {
       minY = 0, maxY = 0, minX = 0, maxX = 0;
     }
     return {minX: minX, maxX: maxX, minY: minY, maxY: maxY};
@@ -111,7 +111,7 @@ class View {
       for (var nodeId in this.body.nodes) {
         if (this.body.nodes.hasOwnProperty(nodeId)) {
           var node = this.body.nodes[nodeId];
-          if (node.predefinedPosition == true) {
+          if (node.predefinedPosition === true) {
             positionDefined += 1;
           }
         }
@@ -219,7 +219,7 @@ class View {
     this.animationEasingFunction = options.animation.easingFunction;
     // release if something focussed on the node
     this.releaseNode();
-    if (options.locked == true) {
+    if (options.locked === true) {
       this.lockedOnNodeId = options.lockedOnNode;
       this.lockedOnNodeOffset = options.offset;
     }
@@ -247,7 +247,7 @@ class View {
     };
 
     // if the time is set to 0, don't do an animation
-    if (options.animation.duration == 0) {
+    if (options.animation.duration === 0) {
       if (this.lockedOnNodeId != undefined) {
         this.viewFunction = this._lockedRedraw.bind(this);
         this.body.emitter.on("initRedraw", this.viewFunction);

lib/network/modules/components/Edge.js

@@ -157,11 +157,11 @@ class Edge {
     let dataChanged = false;
     let changeInType = true;
     if (this.edgeType !== undefined) {
-      if (this.edgeType instanceof BezierEdgeDynamic && this.options.smooth.enabled == true && this.options.smooth.dynamic == true) {changeInType = false;}
-      if (this.edgeType instanceof BezierEdgeStatic  && this.options.smooth.enabled == true && this.options.smooth.dynamic == false){changeInType = false;}
-      if (this.edgeType instanceof StraightEdge      && this.options.smooth.enabled == false)                                       {changeInType = false;}
+      if (this.edgeType instanceof BezierEdgeDynamic && this.options.smooth.enabled === true && this.options.smooth.dynamic === true) {changeInType = false;}
+      if (this.edgeType instanceof BezierEdgeStatic  && this.options.smooth.enabled === true && this.options.smooth.dynamic === false){changeInType = false;}
+      if (this.edgeType instanceof StraightEdge      && this.options.smooth.enabled === false)                                       {changeInType = false;}
 
-      if (changeInType == true) {
+      if (changeInType === true) {
         dataChanged = this.edgeType.cleanup();
       }
     }
@@ -194,7 +194,7 @@ class Edge {
    * @param status
    */
   togglePhysics(status) {
-    if (this.options.smooth.enabled == true && this.options.smooth.dynamic == true) {
+    if (this.options.smooth.enabled === true && this.options.smooth.dynamic === true) {
       if (this.via === undefined) {
         this.via.pptions.physics = status;
       }
@@ -284,7 +284,7 @@ class Edge {
     if (this.value !== undefined) {
       var scale = this.options.scaling.customScalingFunction(min, max, total, this.value);
       var widthDiff = this.options.scaling.max - this.options.scaling.min;
-      if (this.options.scaling.label.enabled == true) {
+      if (this.options.scaling.label.enabled === true) {
         var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
         this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
       }

lib/network/modules/components/NavigationHandler.js

@@ -86,7 +86,7 @@ class NavigationHandler {
       this.navigationDOM['wrapper'].appendChild(this.navigationDOM[navigationDivs[i]]);
 
       var hammer = new Hammer(this.navigationDOM[navigationDivs[i]]);
-      if (navigationDivActions[i] == "_zoomExtent") {
+      if (navigationDivActions[i] === "_zoomExtent") {
         hammerUtil.onTouch(hammer, this._zoomExtent.bind(this));
       }
       else {

lib/network/modules/components/Node.js

@@ -71,7 +71,7 @@ class Node {
    * @param {Edge} edge
    */
   attachEdge(edge) {
-    if (this.edges.indexOf(edge) == -1) {
+    if (this.edges.indexOf(edge) === -1) {
       this.edges.push(edge);
     }
   }
@@ -162,15 +162,15 @@ class Node {
     }
 
     if (options.fixed !== undefined) {
-      if (typeof options.fixed == 'boolean') {
+      if (typeof options.fixed === 'boolean') {
         this.options.fixed.x = true;
         this.options.fixed.y = true;
       }
       else {
-        if (options.fixed.x !== undefined && typeof options.fixed.x == 'boolean') {
+        if (options.fixed.x !== undefined && typeof options.fixed.x === 'boolean') {
           this.options.fixed.x = options.fixed.x;
         }
-        if (options.fixed.y !== undefined && typeof options.fixed.y == 'boolean') {
+        if (options.fixed.y !== undefined && typeof options.fixed.y === 'boolean') {
           this.options.fixed.y = options.fixed.y;
         }
       }
@@ -328,7 +328,7 @@ class Node {
     if (this.value !== undefined) {
       var scale = this.options.scaling.customScalingFunction(min, max, total, this.value);
       var sizeDiff = this.options.scaling.max - this.options.scaling.min;
-      if (this.options.scaling.label.enabled == true) {
+      if (this.options.scaling.label.enabled === true) {
         var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
         this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
       }

lib/network/modules/components/edges/bezierEdgeStatic.js

@@ -43,7 +43,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
     let type = this.options.smooth.type;
     let dx = Math.abs(this.from.x - this.to.x);
     let dy = Math.abs(this.from.y - this.to.y);
-    if (type == 'discrete' || type == 'diagonalCross') {
+    if (type === 'discrete' || type === 'diagonalCross') {
       if (Math.abs(this.from.x - this.to.x) < Math.abs(this.from.y - this.to.y)) {
         if (this.from.y > this.to.y) {
           if (this.from.x < this.to.x) {
@@ -65,7 +65,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
             yVia = this.from.y + factor * dy;
           }
         }
-        if (type == "discrete") {
+        if (type === "discrete") {
           xVia = dx < factor * dy ? this.from.x : xVia;
         }
       }
@@ -90,12 +90,12 @@ class BezierEdgeStatic extends BezierEdgeBase {
             yVia = this.from.y + factor * dx;
           }
         }
-        if (type == "discrete") {
+        if (type === "discrete") {
           yVia = dy < factor * dx ? this.from.y : yVia;
         }
       }
     }
-    else if (type == "straightCross") {
+    else if (type === "straightCross") {
       if (Math.abs(this.from.x - this.to.x) < Math.abs(this.from.y - this.to.y)) {  // up - down
         xVia = this.from.x;
         if (this.from.y < this.to.y) {
@@ -115,7 +115,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
         yVia = this.from.y;
       }
     }
-    else if (type == 'horizontal') {
+    else if (type === 'horizontal') {
       if (this.from.x < this.to.x) {
         xVia = this.to.x - (1 - factor) * dx;
       }
@@ -124,7 +124,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
       }
       yVia = this.from.y;
     }
-    else if (type == 'vertical') {
+    else if (type === 'vertical') {
       xVia = this.from.x;
       if (this.from.y < this.to.y) {
         yVia = this.to.y - (1 - factor) * dy;
@@ -133,7 +133,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
         yVia = this.to.y + (1 - factor) * dy;
       }
     }
-    else if (type == 'curvedCW') {
+    else if (type === 'curvedCW') {
       dx = this.to.x - this.from.x;
       dy = this.from.y - this.to.y;
       let radius = Math.sqrt(dx * dx + dy * dy);
@@ -145,7 +145,7 @@ class BezierEdgeStatic extends BezierEdgeBase {
       xVia = this.from.x + (factor * 0.5 + 0.5) * radius * Math.sin(myAngle);
       yVia = this.from.y + (factor * 0.5 + 0.5) * radius * Math.cos(myAngle);
     }
-    else if (type == 'curvedCCW') {
+    else if (type === 'curvedCCW') {
       dx = this.to.x - this.from.x;
       dy = this.from.y - this.to.y;
       let radius = Math.sqrt(dx * dx + dy * dy);

lib/network/modules/components/edges/util/BezierEdgeBase.js

@@ -48,7 +48,7 @@ class BezierEdgeBase extends EdgeBase {
         break; // found
       }
       else if (difference < 0) { // distance to nodes is larger than distance to border --> t needs to be bigger if we're looking at the to node.
-        if (from == false) {
+        if (from === false) {
           low = middle;
         }
         else {
@@ -56,7 +56,7 @@ class BezierEdgeBase extends EdgeBase {
         }
       }
       else {
-        if (from == false) {
+        if (from === false) {
           high = middle;
         }
         else {

lib/network/modules/components/edges/util/EdgeBase.js

@@ -33,7 +33,7 @@ class EdgeBase {
     let via = undefined;
     if (this.from != this.to) {
       // draw line
-      if (this.options.dashes.enabled == true) {
+      if (this.options.dashes.enabled === true) {
         via = this._drawDashedLine(ctx);
       }
       else {
@@ -229,11 +229,11 @@ class EdgeBase {
    * @private
    */
   getLineWidth(selected, hover) {
-    if (selected == true) {
+    if (selected === true) {
       return Math.max(Math.min(this.options.widthSelectionMultiplier * this.options.width, this.options.scaling.max), 0.3 / this.body.view.scale);
     }
     else {
-      if (hover == true) {
+      if (hover === true) {
         return Math.max(Math.min(this.options.hoverWidth, this.options.scaling.max), 0.3 / this.body.view.scale);
       }
       else {
@@ -247,20 +247,20 @@ class EdgeBase {
     let colorOptions = this.options.color;
 
     if (colorOptions.inherit.enabled === true) {
-      if (colorOptions.inherit.useGradients == true) {
+      if (colorOptions.inherit.useGradients === true) {
         let grd = ctx.createLinearGradient(this.from.x, this.from.y, this.to.x, this.to.y);
         let fromColor, toColor;
         fromColor = this.from.options.color.highlight.border;
         toColor = this.to.options.color.highlight.border;
 
-        if (this.from.selected == false && this.to.selected == false) {
+        if (this.from.selected === false && this.to.selected === false) {
           fromColor = util.overrideOpacity(this.from.options.color.border, this.options.color.opacity);
           toColor = util.overrideOpacity(this.to.options.color.border, this.options.color.opacity);
         }
-        else if (this.from.selected == true && this.to.selected == false) {
+        else if (this.from.selected === true && this.to.selected === false) {
           toColor = this.to.options.color.border;
         }
-        else if (this.from.selected == false && this.to.selected == true) {
+        else if (this.from.selected === false && this.to.selected === true) {
           fromColor = this.from.options.color.border;
         }
         grd.addColorStop(0, fromColor);
@@ -271,12 +271,12 @@ class EdgeBase {
       }
 
       if (this.colorDirty === true) {
-        if (colorOptions.inherit.source == "to") {
+        if (colorOptions.inherit.source === "to") {
           this.color.highlight = this.to.options.color.highlight.border;
           this.color.hover = this.to.options.color.hover.border;
           this.color.color = util.overrideOpacity(this.to.options.color.border, colorOptions.opacity);
         }
-        else { // (this.options.color.inherit.source == "from") {
+        else { // (this.options.color.inherit.source === "from") {
           this.color.highlight = this.from.options.color.highlight.border;
           this.color.hover = this.from.options.color.hover.border;
           this.color.color = util.overrideOpacity(this.from.options.color.border, colorOptions.opacity);
@@ -293,10 +293,10 @@ class EdgeBase {
     this.colorDirty = false;
 
 
-    if (this.selected == true) {
+    if (this.selected === true) {
       return this.color.highlight;
     }
-    else if (this.hover == true) {
+    else if (this.hover === true) {
       return this.color.hover;
     }
     else {
@@ -403,13 +403,13 @@ class EdgeBase {
     let guideOffset;
     let scaleFactor;
 
-    if (position == 'from') {
+    if (position === 'from') {
       node1 = this.from;
       node2 = this.to;
       guideOffset = 0.1;
       scaleFactor = this.options.arrows.from.scaleFactor;
     }
-    else if (position == 'to') {
+    else if (position === 'to') {
       node1 = this.to;
       node2 = this.from;
       guideOffset = -0.1;
@@ -425,7 +425,7 @@ class EdgeBase {
     if (node1 != node2) {
       if (position !== 'middle') {
         // draw arrow head
-        if (this.options.smooth.enabled == true) {
+        if (this.options.smooth.enabled === true) {
           arrowPos = this.findBorderPosition(node1, ctx, {via: viaNode});
           let guidePos = this.getPoint(Math.max(0.0, Math.min(1.0, arrowPos.t + guideOffset)), viaNode);
           angle = Math.atan2((arrowPos.y - guidePos.y), (arrowPos.x - guidePos.x));
@@ -450,17 +450,17 @@ class EdgeBase {
       let angle, point;
       let [x,y,radius] = this._getCircleData(ctx);
 
-      if (position == 'from') {
+      if (position === 'from') {
         point = this.findBorderPosition(this.from, ctx, {x, y, low:0.25, high:0.6, direction:-1});
         angle = point.t * -2 * Math.PI + 1.5 * Math.PI + 0.1 * Math.PI;
       }
-      else if (position == 'to') {
+      else if (position === 'to') {
         point = this.findBorderPosition(this.from, ctx, {x, y, low:0.6, high:1.0, direction:1});
         angle = point.t * -2 * Math.PI + 1.5 * Math.PI - 1.1 * Math.PI;
       }
       else {
         point = this._pointOnCircle(x, y, radius, 0.175);
-        angle = 3.9269908169872414; // == 0.175 * -2 * Math.PI + 1.5 * Math.PI + 0.1 * Math.PI;
+        angle = 3.9269908169872414; // === 0.175 * -2 * Math.PI + 1.5 * Math.PI + 0.1 * Math.PI;
       }
 
       // draw the arrowhead

lib/network/modules/components/physics/CentralGravitySolver.js

@@ -30,7 +30,7 @@ class CentralGravitySolver {
       dy = -node.y;
       distance = Math.sqrt(dx * dx + dy * dy);
 
-      gravityForce = (distance == 0) ? 0 : (gravity / distance);
+      gravityForce = (distance === 0) ? 0 : (gravity / distance);
       forces[nodeId].x = dx * gravityForce;
       forces[nodeId].y = dy * gravityForce;
     }

lib/network/modules/components/physics/HierarchicalRepulsionSolver.js

@@ -30,14 +30,14 @@ class HierarchicalRepulsionSolver {
     var nodeDistance = this.options.nodeDistance;
 
     // we loop from i over all but the last entree in the array
-    // j loops from i+1 to the last. This way we do not double count any of the indices, nor i == j
+    // j loops from i+1 to the last. This way we do not double count any of the indices, nor i === j
     for (i = 0; i < nodeIndices.length - 1; i++) {
       node1 = nodes[nodeIndices[i]];
       for (j = i + 1; j < nodeIndices.length; j++) {
         node2 = nodes[nodeIndices[j]];
 
         // nodes only affect nodes on their level
-        if (node1.level == node2.level) {
+        if (node1.level === node2.level) {
           dx = node2.x - node1.x;
           dy = node2.y - node1.y;
           distance = Math.sqrt(dx * dx + dy * dy);
@@ -50,7 +50,7 @@ class HierarchicalRepulsionSolver {
             repulsingForce = 0;
           }
           // normalize force with
-          if (distance == 0) {
+          if (distance === 0) {
             distance = 0.01;
           }
           else {

lib/network/modules/components/physics/HierarchicalSpringSolver.js

@@ -45,7 +45,7 @@ class HierarchicalSpringSolver {
         dx = (edge.from.x - edge.to.x);
         dy = (edge.from.y - edge.to.y);
         distance = Math.sqrt(dx * dx + dy * dy);
-        distance = distance == 0 ? 0.01 : distance;
+        distance = distance === 0 ? 0.01 : distance;
 
         // the 1/distance is so the fx and fy can be calculated without sine or cosine.
         springForce = this.options.springConstant * (edgeLength - distance) / distance;

lib/network/modules/components/physics/RepulsionSolver.js

@@ -33,7 +33,7 @@ class RepulsionSolver {
     var b = 4 / 3;
 
     // we loop from i over all but the last entree in the array
-    // j loops from i+1 to the last. This way we do not double count any of the indices, nor i == j
+    // j loops from i+1 to the last. This way we do not double count any of the indices, nor i === j
     for (let i = 0; i < nodeIndices.length - 1; i++) {
       node1 = nodes[nodeIndices[i]];
       for (let j = i + 1; j < nodeIndices.length; j++) {
@@ -44,7 +44,7 @@ class RepulsionSolver {
         distance = Math.sqrt(dx * dx + dy * dy);
 
         // same condition as BarnesHutSolver, making sure nodes are never 100% overlapping.
-        if (distance == 0) {
+        if (distance === 0) {
           distance = 0.1*Math.random();
           dx = distance;
         }

lib/network/modules/components/physics/SpringSolver.js

@@ -65,7 +65,7 @@ class SpringSolver {
     dx = (node1.x - node2.x);
     dy = (node1.y - node2.y);
     distance = Math.sqrt(dx * dx + dy * dy);
-    distance = distance == 0 ? 0.01 : distance;
+    distance = distance === 0 ? 0.01 : distance;
 
     // the 1/distance is so the fx and fy can be calculated without sine or cosine.
     springForce = this.options.springConstant * (edgeLength - distance) / distance;

lib/network/modules/components/unified/label.js

@@ -36,7 +36,7 @@ class Label {
         this.fontOptions.face = optionsArray[1];
         this.fontOptions.color = optionsArray[2];
       }
-      else if (typeof options.font == 'object') {
+      else if (typeof options.font === 'object') {
         this.fontOptions = util.bridgeObject(options.font);
       }
       this.fontOptions.size = Number(this.fontOptions.size);
@@ -219,7 +219,7 @@ class Label {
     this.size.left = x - this.size.width * 0.5;
     this.size.top = y - this.size.height * 0.5;
     this.size.yLine = y + (1 - this.lineCount) * 0.5 * this.fontOptions.size;
-    if (baseline == "hanging") {
+    if (baseline === "hanging") {
       this.size.top += 0.5 * this.fontOptions.size;
       this.size.top += 4;   // distance from node, required because we use hanging. Hanging has less difference between browsers
       this.size.yLine += 4; // distance from node

lib/network/shapes.js

@@ -238,7 +238,7 @@ if (typeof CanvasRenderingContext2D !== 'undefined') {
    */
   CanvasRenderingContext2D.prototype.dashedLine = function (x, y, x2, y2, dashArray) {
     if (!dashArray) dashArray = [10, 5];
-    if (dashLength == 0) dashLength = 0.001; // Hack for Safari
+    if (dashLength === 0) dashLength = 0.001; // Hack for Safari
     var dashCount = dashArray.length;
     this.moveTo(x, y);
     var dx = (x2 - x), dy = (y2 - y);