diff --git a/src/main/webapp/scripts/dialogs/expression-preview-dialog.js b/src/main/webapp/scripts/dialogs/expression-preview-dialog.js
index 70fbf4a17..5caebf840 100644
--- a/src/main/webapp/scripts/dialogs/expression-preview-dialog.js
+++ b/src/main/webapp/scripts/dialogs/expression-preview-dialog.js
@@ -274,7 +274,7 @@ ExpressionPreviewDialog.Widget.prototype._renderExpressionHistory = function(dat
 };
 
 ExpressionPreviewDialog.Widget.prototype._scheduleUpdate = function() {
-    if (this._timerID != null) {
+    if (this._timerID !== null) {
         window.clearTimeout(this._timerID);
     }
     var self = this;
@@ -332,7 +332,7 @@ ExpressionPreviewDialog.Widget.prototype._renderPreview = function(expression, d
         }
     };
     
-    if (this._results != null) {
+    if (this._results !== null) {
         this._elmts.expressionPreviewErrorContainer.empty();
     } else {
         var message = (data.type == "parser") ? data.message : "Internal error";
@@ -347,7 +347,7 @@ ExpressionPreviewDialog.Widget.prototype._renderPreview = function(expression, d
         renderValue($(tr.insertCell(1)), this._values[i]);
         
         var tdValue = $(tr.insertCell(2));
-        if (this._results != null) {
+        if (this._results !== null) {
             var v = this._results[i];
             renderValue(tdValue, v);
         }
diff --git a/src/main/webapp/scripts/dialogs/extend-data-preview-dialog.js b/src/main/webapp/scripts/dialogs/extend-data-preview-dialog.js
index 158d350e3..075f70dc4 100644
--- a/src/main/webapp/scripts/dialogs/extend-data-preview-dialog.js
+++ b/src/main/webapp/scripts/dialogs/extend-data-preview-dialog.js
@@ -351,7 +351,7 @@ ExtendDataPreviewDialog.prototype._renderPreview = function(data) {
         for (var c = 0; c < row.length; c++) {
             var td = tr.insertCell(tr.cells.length);
             var cell = row[c];
-            if (cell != null) {
+            if (cell !== null) {
                 if ($.isPlainObject(cell)) {
                     $('<a>').attr("href", "http://www.freebase.com/view" + cell.id).text(cell.name).appendTo(td);
                 } else {
diff --git a/src/main/webapp/scripts/dialogs/recon-dialog.js b/src/main/webapp/scripts/dialogs/recon-dialog.js
index 362c6c714..9f68e88ec 100644
--- a/src/main/webapp/scripts/dialogs/recon-dialog.js
+++ b/src/main/webapp/scripts/dialogs/recon-dialog.js
@@ -224,7 +224,7 @@ ReconDialog.prototype._onDoHeuristic = function() {
     var type = this._elmts.heuristicTypeInput.data("data.suggest");
 
     var choices = $('input[name="recon-dialog-type-choice"]:checked');
-    if (choices != null && choices.length > 0 && choices[0].value != "") {
+    if (choices !== null && choices.length > 0 && choices[0].value != "") {
         type = {
             id: choices[0].value,
             name: choices.attr("typeName")
@@ -238,7 +238,7 @@ ReconDialog.prototype._onDoHeuristic = function() {
         var propertyInputs = $('input[name="recon-dialog-heuristic-property"]');
         $.each(propertyInputs, function() {
             var property = $(this).data("data.suggest");
-            if (property != null) {
+            if (property !== null) {
                 columnDetails.push({
                     column: this.getAttribute("columnName"),
                     property: {
diff --git a/src/main/webapp/scripts/facets/list-facet.js b/src/main/webapp/scripts/facets/list-facet.js
index e9b15b69b..bb96e5458 100644
--- a/src/main/webapp/scripts/facets/list-facet.js
+++ b/src/main/webapp/scripts/facets/list-facet.js
@@ -47,8 +47,8 @@ ListFacet.prototype.getJSON = function() {
         omitBlank: "omitBlank" in this._config ? this._config.omitBlank : false,
         omitError: "omitError" in this._config ? this._config.omitError : false,
         selection: [],
-        selectBlank: this._blankChoice != null && this._blankChoice.s,
-        selectError: this._errorChoice != null && this._errorChoice.s
+        selectBlank: this._blankChoice !== null && this._blankChoice.s,
+        selectError: this._errorChoice !== null && this._errorChoice.s
     };
     for (var i = 0; i < this._selection.length; i++) {
         var choice = {
@@ -61,8 +61,8 @@ ListFacet.prototype.getJSON = function() {
 
 ListFacet.prototype.hasSelection = function() {
     return this._selection.length > 0 || 
-        (this._blankChoice != null && this._blankChoice.s) || 
-        (this._errorChoice != null && this._errorChoice.s);
+        (this._blankChoice !== null && this._blankChoice.s) || 
+        (this._errorChoice !== null && this._errorChoice.s);
 };
 
 ListFacet.prototype.updateState = function(data) {
@@ -132,8 +132,8 @@ ListFacet.prototype.render = function() {
         bodyDiv.appendTo(container);
     } else {
         var selectionCount = this._selection.length
-            + (this._blankChoice != null && this._blankChoice.s ? 1 : 0)
-            + (this._errorChoice != null && this._errorChoice.s ? 1 : 0);
+            + (this._blankChoice !== null && this._blankChoice.s ? 1 : 0)
+            + (this._errorChoice !== null && this._errorChoice.s ? 1 : 0);
             
         if (selectionCount > 0) {
             var reset = function() {
@@ -207,10 +207,10 @@ ListFacet.prototype.render = function() {
         for (var i = 0; i < choices.length; i++) {
             renderChoice(choices[i]);
         }
-        if (this._blankChoice != null) {
+        if (this._blankChoice !== null) {
             renderChoice(this._blankChoice, "(blank)");
         }
-        if (this._errorChoice != null) {
+        if (this._errorChoice !== null) {
             renderChoice(this._errorChoice, "(error)");
         }
         
@@ -342,10 +342,10 @@ ListFacet.prototype._editChoice = function(choice, choiceDiv) {
 ListFacet.prototype._select = function(choice, only) {
     if (only) {
         this._selection = [];
-        if (this._blankChoice != null) {
+        if (this._blankChoice !== null) {
             this._blankChoice.s = false;
         }
-        if (this._errorChoice != null) {
+        if (this._errorChoice !== null) {
             this._errorChoice.s = false;
         }
     }
diff --git a/src/main/webapp/scripts/facets/range-facet.js b/src/main/webapp/scripts/facets/range-facet.js
index 45070281e..6d2094a5a 100644
--- a/src/main/webapp/scripts/facets/range-facet.js
+++ b/src/main/webapp/scripts/facets/range-facet.js
@@ -72,12 +72,12 @@ RangeFacet.prototype.getJSON = function() {
     };
     
     if (this._config.mode == "min" || this._config.mode == "range") {
-        if (this._from != null) {
+        if (this._from !== null) {
             o.from = this._from;
         }
     }
     if (this._config.mode == "max" || this._config.mode == "range") {
-        if (this._to != null) {
+        if (this._to !== null) {
             o.to = this._to;
         }
     }
@@ -92,12 +92,12 @@ RangeFacet.prototype.hasSelection = function() {
     
     switch (this._config.mode) {
     case "min":
-        return this._from != null && (!this._initializedUI || this._from > this._config.min);
+        return this._from !== null && (!this._initializedUI || this._from > this._config.min);
     case "max":
-        return this._to != null && (!this._initializedUI || this._to < this._config.max);
+        return this._to !== null && (!this._initializedUI || this._to < this._config.max);
     default:
-        return (this._from != null && (!this._initializedUI || this._from > this._config.min)) ||
-            (this._to != null && (!this._initializedUI || this._to < this._config.max));
+        return (this._from !== null && (!this._initializedUI || this._from > this._config.min)) ||
+            (this._to !== null && (!this._initializedUI || this._to < this._config.max));
     }
 };
 
diff --git a/src/main/webapp/scripts/facets/text-search-facet.js b/src/main/webapp/scripts/facets/text-search-facet.js
index da1125640..3a190bcfe 100644
--- a/src/main/webapp/scripts/facets/text-search-facet.js
+++ b/src/main/webapp/scripts/facets/text-search-facet.js
@@ -40,7 +40,7 @@ TextSearchFacet.prototype.getJSON = function() {
 };
 
 TextSearchFacet.prototype.hasSelection = function() {
-    return this._query != null;
+    return this._query !== null;
 };
 
 TextSearchFacet.prototype._initializeUI = function() {
@@ -70,13 +70,13 @@ TextSearchFacet.prototype._initializeUI = function() {
     
     elmts.caseSensitiveCheckbox.bind("change", function() {
         self._config.caseSensitive = this.checked;
-        if (self._query != null && self._query.length > 0) {
+        if (self._query !== null && self._query.length > 0) {
             self._scheduleUpdate();
         }
     });
     elmts.regexCheckbox.bind("change", function() {
         self._config.mode = this.checked ? "regex" : "text";
-        if (self._query != null && self._query.length > 0) {
+        if (self._query !== null && self._query.length > 0) {
             self._scheduleUpdate();
         }
     });
diff --git a/src/main/webapp/scripts/project/process-widget.js b/src/main/webapp/scripts/project/process-widget.js
index a8489419f..a9311a197 100644
--- a/src/main/webapp/scripts/project/process-widget.js
+++ b/src/main/webapp/scripts/project/process-widget.js
@@ -39,7 +39,7 @@ ProcessWidget.prototype.update = function(updateOptions, onDone) {
         this._onDones.push(onDone);
     }
     
-    if (this._timerID != null) {
+    if (this._timerID !== null) {
         return;
     }
     
@@ -71,7 +71,7 @@ ProcessWidget.prototype.showUndo = function(historyEntry) {
 };
 
 ProcessWidget.prototype.undo = function() {
-    if (this._latestHistoryEntry != null) {
+    if (this._latestHistoryEntry !== null) {
         Gridworks.postProcess(
             "undo-redo",
             { undoID: this._latestHistoryEntry.id },
diff --git a/src/main/webapp/scripts/protograph/schema-alignment-ui-link.js b/src/main/webapp/scripts/protograph/schema-alignment-ui-link.js
index 947393dc5..6d6180f94 100644
--- a/src/main/webapp/scripts/protograph/schema-alignment-ui-link.js
+++ b/src/main/webapp/scripts/protograph/schema-alignment-ui-link.js
@@ -46,7 +46,7 @@ SchemaAlignmentDialog.UILink = function(dialog, link, table, options, parentUINo
 SchemaAlignmentDialog.UILink.prototype._renderMain = function() {
     $(this._tdMain).empty();
     
-    var label = this._link.property != null ? this._link.property.id : "property?";
+    var label = this._link.property !== null ? this._link.property.id : "property?";
     
     var self = this;
     
@@ -93,10 +93,10 @@ SchemaAlignmentDialog.UILink.prototype._renderDetails = function() {
 
 SchemaAlignmentDialog.UILink.prototype._startEditProperty = function(elmt) {
     var sourceTypeID = this._parentUINode.getExpectedType();
-    var targetTypeID = "type" in this._link.target && this._link.target.type != null ? this._link.target.type.id : null;
+    var targetTypeID = "type" in this._link.target && this._link.target.type !== null ? this._link.target.type.id : null;
     var targetTypeName = "columnName" in this._link.target ? this._link.target.columnName : null;
     
-    if (sourceTypeID != null) {
+    if (sourceTypeID !== null) {
         var self = this;
         var dismissBusy = DialogSystem.showBusy();
         
@@ -299,7 +299,7 @@ SchemaAlignmentDialog.UILink.prototype._showPropertySuggestPopup = function(elmt
     var suggestOptions = {
         type : '/type/property'
     };
-    if (this._link.target != null && "type" in this._link.target && this._link.target.type != null) {
+    if (this._link.target !== null && "type" in this._link.target && this._link.target.type !== null) {
         /*
         suggestOptions.mql_filter = [{
             "/type/property/expected_type" : {
@@ -309,7 +309,7 @@ SchemaAlignmentDialog.UILink.prototype._showPropertySuggestPopup = function(elmt
         */
     } else {
         var sourceTypeID = this._parentUINode.getExpectedType();
-        if (sourceTypeID != null) {
+        if (sourceTypeID !== null) {
             suggestOptions.schema = sourceTypeID;
         }
     }
@@ -319,11 +319,11 @@ SchemaAlignmentDialog.UILink.prototype._showPropertySuggestPopup = function(elmt
 };
 
 SchemaAlignmentDialog.UILink.prototype.getJSON = function() {
-    if ("property" in this._link && this._link.property != null &&
-        "target" in this._link && this._link.target != null) {
+    if ("property" in this._link && this._link.property !== null &&
+        "target" in this._link && this._link.target !== null) {
         
         var targetJSON = this._targetUI.getJSON();
-        if (targetJSON != null) {
+        if (targetJSON !== null) {
             return {
                 property: cloneDeep(this._link.property),
                 target: targetJSON
diff --git a/src/main/webapp/scripts/protograph/schema-alignment-ui-node.js b/src/main/webapp/scripts/protograph/schema-alignment-ui-node.js
index e5c96d7d5..f2c0da273 100644
--- a/src/main/webapp/scripts/protograph/schema-alignment-ui-node.js
+++ b/src/main/webapp/scripts/protograph/schema-alignment-ui-node.js
@@ -152,7 +152,7 @@ SchemaAlignmentDialog.UINode.prototype._renderDetails = function() {
 
     this._tableLinks = $('<table></table>').addClass("schema-alignment-table-layout").appendTo(this._expandedDetailDiv)[0];
     
-    if ("links" in this._node && this._node.links != null) {
+    if ("links" in this._node && this._node.links !== null) {
         for (var i = 0; i < this._node.links.length; i++) {
             this._linkUIs.push(new SchemaAlignmentDialog.UILink(
                 this._dialog, 
@@ -614,7 +614,7 @@ SchemaAlignmentDialog.UINode.prototype._showNodeConfigDialog = function() {
     
     $('<button></button>').html("&nbsp;&nbsp;OK&nbsp;&nbsp;").click(function() {
         var node = getResultJSON();
-        if (node != null) {
+        if (node !== null) {
             DialogSystem.dismissUntil(level - 1);
             
             self._node = node;
@@ -701,7 +701,7 @@ SchemaAlignmentDialog.UINode.prototype.getJSON = function() {
         var links = [];
         for (var i = 0; i < this._linkUIs.length; i++) {
             var link = this._linkUIs[i].getJSON();
-            if (link != null) {
+            if (link !== null) {
                 links.push(link);
             }
         }
diff --git a/src/main/webapp/scripts/protograph/schema-alignment.js b/src/main/webapp/scripts/protograph/schema-alignment.js
index b17ff926c..16d555d9f 100644
--- a/src/main/webapp/scripts/protograph/schema-alignment.js
+++ b/src/main/webapp/scripts/protograph/schema-alignment.js
@@ -10,7 +10,7 @@ SchemaAlignment.autoAlign = function() {
     
     for (var c = 0; c < columns.length; c++) {
         var column = columns[c];
-        var typed = "reconConfig" in column && column.reconConfig != null;
+        var typed = "reconConfig" in column && column.reconConfig !== null;
         var candidate = {
             status: "unbound",
             typed: typed,
@@ -101,7 +101,7 @@ SchemaAlignment.createNewRootNode = function() {
             columnName: column.name,
             createForNoReconMatch: true
         };
-        if ("reconConfig" in column && column.reconConfig != null) {
+        if ("reconConfig" in column && column.reconConfig !== null) {
             target.type = {
                 id: column.reconConfig.type.id,
                 name: column.reconConfig.type.name
@@ -239,7 +239,7 @@ SchemaAlignmentDialog.prototype.getJSON = function() {
     var rootNodes = [];
     for (var i = 0; i < this._nodeUIs.length; i++) {
         var node = this._nodeUIs[i].getJSON();
-        if (node != null) {
+        if (node !== null) {
             rootNodes.push(node);
         }
     }
diff --git a/src/main/webapp/scripts/util/dom.js b/src/main/webapp/scripts/util/dom.js
index 0e397f67d..e1dc9045e 100644
--- a/src/main/webapp/scripts/util/dom.js
+++ b/src/main/webapp/scripts/util/dom.js
@@ -12,7 +12,7 @@ DOM.bind = function(elmt) {
 
 DOM._bindDOMElement = function(elmt, map) {
     var bind = elmt.getAttribute("bind");
-    if (bind != null && bind.length > 0) {
+    if (bind !== null && bind.length > 0) {
         map[bind] = $(elmt);
         elmt.removeAttribute("bind");
     }
@@ -24,7 +24,7 @@ DOM._bindDOMElement = function(elmt, map) {
 
 DOM._bindDOMChildren = function(elmt, map) {
     var node = elmt.firstChild;
-    while (node != null) {
+    while (node !== null) {
         var node2 = node.nextSibling;
         if (node.nodeType == 1) {
             DOM._bindDOMElement(node, map);
diff --git a/src/main/webapp/scripts/util/histogram-widget.js b/src/main/webapp/scripts/util/histogram-widget.js
index e9b54571e..b927da4e5 100644
--- a/src/main/webapp/scripts/util/histogram-widget.js
+++ b/src/main/webapp/scripts/util/histogram-widget.js
@@ -42,8 +42,8 @@ HistogramWidget.prototype.update = function(min, max, step, binMatrix, from, to)
 };
 
 HistogramWidget.prototype._update = function() {
-    if (this._binMatrix != null) {
-        if (this._highlight != null) {
+    if (this._binMatrix !== null) {
+        if (this._highlight !== null) {
             this._highlight.from = Math.max(this._highlight.from, this._range.min);
             this._highlight.to = Math.min(this._highlight.to, this._range.max);
         }
@@ -135,7 +135,7 @@ HistogramWidget.prototype._render = function() {
         /*
          *  Draw highlight
          */
-        if (this._highlight != null) {
+        if (this._highlight !== null) {
             ctx.fillStyle = "rgba(192,192,192, 0.5)";
             ctx.globalCompositeOperation = "source-over";
             if (this._highlight.from > this._range.min) {
diff --git a/src/main/webapp/scripts/util/menu.js b/src/main/webapp/scripts/util/menu.js
index d9f9f29c3..07f7814e5 100644
--- a/src/main/webapp/scripts/util/menu.js
+++ b/src/main/webapp/scripts/util/menu.js
@@ -26,7 +26,7 @@ MenuSystem.showMenu = function(elmt, onDismiss) {
 
 MenuSystem.dismissAll = function() {
     MenuSystem.dismissUntil(0);
-    if (MenuSystem._overlay != null) {
+    if (MenuSystem._overlay !== null) {
         MenuSystem._overlay.remove();
         MenuSystem._overlay = null;
     }
diff --git a/src/main/webapp/scripts/views/data-table-cell-ui.js b/src/main/webapp/scripts/views/data-table-cell-ui.js
index 08f5e4ec3..b593c9cbf 100644
--- a/src/main/webapp/scripts/views/data-table-cell-ui.js
+++ b/src/main/webapp/scripts/views/data-table-cell-ui.js
@@ -43,7 +43,7 @@ DataTableCellUI.prototype._render = function() {
                 .appendTo(divContent).click(function(evt) {
                     self._doRematch();
                 });
-        } else if (r.j == "matched" && "m" in r && r.m != null) {
+        } else if (r.j == "matched" && "m" in r && r.m !== null) {
             var match = cell.r.m;
             $('<a></a>')
                 .text(match.name)
@@ -207,7 +207,7 @@ DataTableCellUI.prototype._searchForMatch = function() {
     
     var match = null;
     var commit = function() {
-        if (match != null) {
+        if (match !== null) {
             var query = {
                 "id" : match.id,
                 "type" : []
diff --git a/src/main/webapp/scripts/views/data-table-column-header-ui.js b/src/main/webapp/scripts/views/data-table-column-header-ui.js
index 56b57d69f..fdc0e49c3 100644
--- a/src/main/webapp/scripts/views/data-table-column-header-ui.js
+++ b/src/main/webapp/scripts/views/data-table-column-header-ui.js
@@ -895,7 +895,7 @@ DataTableColumnHeaderUI.prototype._doRemoveColumn = function() {
 
 DataTableColumnHeaderUI.prototype._doRenameColumn = function() {
     var newColumnName = window.prompt("Enter new column name", this._column.name);
-    if (newColumnName != null) {
+    if (newColumnName !== null) {
         Gridworks.postProcess(
             "rename-column", 
             {
@@ -910,7 +910,7 @@ DataTableColumnHeaderUI.prototype._doRenameColumn = function() {
 
 DataTableColumnHeaderUI.prototype._doJoinMultiValueCells = function() {
     var separator = window.prompt("Enter separator to use between values", ", ");
-    if (separator != null) {
+    if (separator !== null) {
         Gridworks.postProcess(
             "join-multi-value-cells", 
             {
@@ -926,7 +926,7 @@ DataTableColumnHeaderUI.prototype._doJoinMultiValueCells = function() {
 
 DataTableColumnHeaderUI.prototype._doSplitMultiValueCells = function() {
     var separator = window.prompt("What separator currently separates the values?", ",");
-    if (separator != null) {
+    if (separator !== null) {
         Gridworks.postProcess(
             "split-multi-value-cells", 
             {
diff --git a/src/main/webapp/scripts/views/data-table-view.js b/src/main/webapp/scripts/views/data-table-view.js
index 402d36ae1..63702447a 100644
--- a/src/main/webapp/scripts/views/data-table-view.js
+++ b/src/main/webapp/scripts/views/data-table-view.js
@@ -399,7 +399,7 @@ DataTableView.sampleVisibleRows = function(column) {
         var v = null;
         if (column.cellIndex < row.cells.length) {
             var cell = row.cells[column.cellIndex];
-            if (cell != null) {
+            if (cell !== null) {
                 v = cell.v;
             }
         }