diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000000..111b15e321
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,4 @@
+{
+	"-W030": true,
+	"-W083": true
+}
diff --git a/.travis.yml b/.travis.yml
index a97e5659e1..ab29d9bd3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ before_install:
   - "git fetch origin refs/tags/v3.2.2:refs/tags/v3.2.2"
   - "git checkout tags/v3.2.2"
   - "cd ../.."
+  - "npm install"
 
 before_script:
   - "./build.py plovr"
diff --git a/build.py b/build.py
index 7962522c69..c05f89b4f1 100755
--- a/build.py
+++ b/build.py
@@ -21,6 +21,7 @@ if sys.platform == 'win32':
         'JAVA': 'java.exe',
         'JAR': 'jar.exe',
         'JSDOC': 'jsdoc.cmd',
+        'JSHINT': './node_modules/.bin/jshint',
         'PYTHON': 'python.exe',
         'PHANTOMJS': 'phantomjs.cmd'
     }
@@ -71,6 +72,7 @@ if sys.platform == 'win32':
 else:
     variables.GIT = 'git'
     variables.GJSLINT = 'gjslint'
+    variables.JSHINT = './node_modules/.bin/jshint'
     variables.JAVA = 'java'
     variables.JAR = 'jar'
     variables.JSDOC = 'jsdoc'
@@ -81,7 +83,8 @@ variables.BRANCH = output(
     '%(GIT)s', 'rev-parse', '--abbrev-ref', 'HEAD').strip()
 
 EXECUTABLES = [variables.GIT, variables.GJSLINT, variables.JAVA, variables.JAR,
-               variables.JSDOC, variables.PYTHON, variables.PHANTOMJS]
+               variables.JSDOC, variables.JSHINT, variables.PYTHON,
+               variables.PHANTOMJS]
 
 EXPORTS = [path
            for path in ifind('src')
@@ -164,7 +167,7 @@ def report_sizes(t):
 virtual('default', 'build')
 
 
-virtual('integration-test', 'lint', 'build', 'build-all',
+virtual('integration-test', 'lint', 'jshint', 'build', 'build-all',
         'test', 'build/examples/all.combined.js', 'check-examples', 'apidoc')
 
 
@@ -172,7 +175,7 @@ virtual('build', 'build/ol.css', 'build/ol.js',
         'build/ol-simple.js', 'build/ol-whitespace.js')
 
 
-virtual('check', 'lint', 'build/ol-all.js', 'test')
+virtual('check', 'lint', 'jshint', 'build/ol-all.js', 'test')
 
 
 virtual('todo', 'fixme')
@@ -409,6 +412,15 @@ def build_lint_libtess_js_timestamp(t):
     t.touch()
 
 
+virtual('jshint', 'build/jshint-timestamp')
+
+
+@target('build/jshint-timestamp', SRC, EXAMPLES_SRC, SPEC, precious=True)
+def build_jshint_timestamp(t):
+    t.run(variables.JSHINT, '--verbose', t.newer(t.dependencies))
+    t.touch()
+
+
 def _strip_comments(lines):
     # FIXME this is a horribe hack, we should use a proper JavaScript parser
     # here
diff --git a/examples/igc.js b/examples/igc.js
index ac86418471..8597677ff2 100644
--- a/examples/igc.js
+++ b/examples/igc.js
@@ -174,7 +174,7 @@ $('#time').on('input', function(event) {
     var geometry = /** @type {ol.geom.LineString} */ (feature.getGeometry());
     var coordinate = geometry.getCoordinateAtM(m, true);
     var highlight = feature.get('highlight');
-    if (highlight == undefined) {
+    if (highlight === undefined) {
       highlight = new ol.Feature(new ol.geom.Point(coordinate));
       feature.set('highlight', highlight);
       featureOverlay.addFeature(highlight);
diff --git a/examples/modify-test.js b/examples/modify-test.js
index 96c5c5d5a4..34ef8bb3eb 100644
--- a/examples/modify-test.js
+++ b/examples/modify-test.js
@@ -13,6 +13,7 @@ goog.require('ol.style.Style');
 
 
 var styleFunction = (function() {
+  /* jshint -W069 */
   var styles = {};
   var image = new ol.style.Circle({
     radius: 5,
@@ -57,6 +58,7 @@ var styleFunction = (function() {
   return function(feature, resolution) {
     return styles[feature.getGeometry().getType()] || styles['default'];
   };
+  /* jshint +W069 */
 })();
 
 var source = new ol.source.GeoJSON(
@@ -165,6 +167,7 @@ var layer = new ol.layer.Vector({
 });
 
 var overlayStyle = (function() {
+  /* jshint -W069 */
   var styles = {};
   styles['Polygon'] = [
     new ol.style.Style({
@@ -225,6 +228,7 @@ var overlayStyle = (function() {
   return function(feature, resolution) {
     return styles[feature.getGeometry().getType()];
   };
+  /* jshint +W069 */
 })();
 
 var select = new ol.interaction.Select({
diff --git a/examples/vector-labels.html b/examples/vector-labels.html
index 8312c87256..db16e2f62c 100644
--- a/examples/vector-labels.html
+++ b/examples/vector-labels.html
@@ -68,7 +68,7 @@
       </div>
 
       <div class="edit-form">
-        <input type="button" value="Refresh" onclick="refreshPoints();" />
+        <input id="refresh-points" type="button" value="Refresh" />
         <h2>Points</h2>
         <div class="edit-form-elem">
           <label>Text: </label>
@@ -157,7 +157,7 @@
       </div>
 
       <div class="edit-form">
-        <input type="button" value="Refresh" onclick="refreshLines();" />
+        <input id="refresh-lines" type="button" value="Refresh" />
         <h2>Lines</h2>
         <div class="edit-form-elem">
           <label>Text: </label>
@@ -246,7 +246,7 @@
       </div>
 
       <div class="edit-form">
-        <input type="button" value="Refresh" onclick="refreshPolygons();" />
+        <input id="refresh-polygons" type="button" value="Refresh" />
         <h2>Polygons</h2>
         <div class="edit-form-elem">
           <label>Text: </label>
diff --git a/examples/vector-labels.js b/examples/vector-labels.js
index 44cb2cfaa2..d4dc281292 100644
--- a/examples/vector-labels.js
+++ b/examples/vector-labels.js
@@ -13,56 +13,56 @@ goog.require('ol.style.Text');
 
 
 var myDom = {
-  'points': {
-    'text': document.getElementById('points-text'),
-    'align': document.getElementById('points-align'),
-    'baseline': document.getElementById('points-baseline'),
-    'rotation': document.getElementById('points-rotation'),
-    'font': document.getElementById('points-font'),
-    'weight': document.getElementById('points-weight'),
-    'size': document.getElementById('points-size'),
-    'offset-x': document.getElementById('points-offset-x'),
-    'offset-y': document.getElementById('points-offset-y'),
-    'color': document.getElementById('points-color'),
-    'outline': document.getElementById('points-outline'),
-    'outline-width': document.getElementById('points-outline-width'),
-    'maxreso': document.getElementById('points-maxreso')
+  points: {
+    text: document.getElementById('points-text'),
+    align: document.getElementById('points-align'),
+    baseline: document.getElementById('points-baseline'),
+    rotation: document.getElementById('points-rotation'),
+    font: document.getElementById('points-font'),
+    weight: document.getElementById('points-weight'),
+    size: document.getElementById('points-size'),
+    offsetX: document.getElementById('points-offset-x'),
+    offsetY: document.getElementById('points-offset-y'),
+    color: document.getElementById('points-color'),
+    outline: document.getElementById('points-outline'),
+    outlineWidth: document.getElementById('points-outline-width'),
+    maxreso: document.getElementById('points-maxreso')
   },
-  'lines': {
-    'text': document.getElementById('lines-text'),
-    'align': document.getElementById('lines-align'),
-    'baseline': document.getElementById('lines-baseline'),
-    'rotation': document.getElementById('lines-rotation'),
-    'font': document.getElementById('lines-font'),
-    'weight': document.getElementById('lines-weight'),
-    'size': document.getElementById('lines-size'),
-    'offset-x': document.getElementById('lines-offset-x'),
-    'offset-y': document.getElementById('lines-offset-y'),
-    'color': document.getElementById('lines-color'),
-    'outline': document.getElementById('lines-outline'),
-    'outline-width': document.getElementById('lines-outline-width'),
-    'maxreso': document.getElementById('lines-maxreso')
+  lines: {
+    text: document.getElementById('lines-text'),
+    align: document.getElementById('lines-align'),
+    baseline: document.getElementById('lines-baseline'),
+    rotation: document.getElementById('lines-rotation'),
+    font: document.getElementById('lines-font'),
+    weight: document.getElementById('lines-weight'),
+    size: document.getElementById('lines-size'),
+    offsetX: document.getElementById('lines-offset-x'),
+    offsetY: document.getElementById('lines-offset-y'),
+    color: document.getElementById('lines-color'),
+    outline: document.getElementById('lines-outline'),
+    outlineWidth: document.getElementById('lines-outline-width'),
+    maxreso: document.getElementById('lines-maxreso')
   },
-  'polygons': {
-    'text': document.getElementById('polygons-text'),
-    'align': document.getElementById('polygons-align'),
-    'baseline': document.getElementById('polygons-baseline'),
-    'rotation': document.getElementById('polygons-rotation'),
-    'font': document.getElementById('polygons-font'),
-    'weight': document.getElementById('polygons-weight'),
-    'size': document.getElementById('polygons-size'),
-    'offset-x': document.getElementById('polygons-offset-x'),
-    'offset-y': document.getElementById('polygons-offset-y'),
-    'color': document.getElementById('polygons-color'),
-    'outline': document.getElementById('polygons-outline'),
-    'outline-width': document.getElementById('polygons-outline-width'),
-    'maxreso': document.getElementById('polygons-maxreso')
+  polygons: {
+    text: document.getElementById('polygons-text'),
+    align: document.getElementById('polygons-align'),
+    baseline: document.getElementById('polygons-baseline'),
+    rotation: document.getElementById('polygons-rotation'),
+    font: document.getElementById('polygons-font'),
+    weight: document.getElementById('polygons-weight'),
+    size: document.getElementById('polygons-size'),
+    offsetX: document.getElementById('polygons-offset-x'),
+    offsetY: document.getElementById('polygons-offset-y'),
+    color: document.getElementById('polygons-color'),
+    outline: document.getElementById('polygons-outline'),
+    outlineWidth: document.getElementById('polygons-outline-width'),
+    maxreso: document.getElementById('polygons-maxreso')
   }
 };
 
 var getText = function(feature, resolution, dom) {
-  var type = dom['text'].value;
-  var maxResolution = dom['maxreso'].value;
+  var type = dom.text.value;
+  var maxResolution = dom.maxreso.value;
   var text = feature.getProperties().name;
 
   if (resolution > maxResolution) {
@@ -80,17 +80,17 @@ var getText = function(feature, resolution, dom) {
 
 
 var createTextStyle = function(feature, resolution, dom) {
-  var align = dom['align'].value;
-  var baseline = dom['baseline'].value;
-  var size = dom['size'].value;
-  var offsetX = parseInt(dom['offset-x'].value, 10);
-  var offsetY = parseInt(dom['offset-y'].value, 10);
-  var weight = dom['weight'].value;
-  var rotation = parseFloat(dom['rotation'].value);
-  var font = weight + ' ' + size + ' ' + dom['font'].value;
-  var fillColor = dom['color'].value;
-  var outlineColor = dom['outline'].value;
-  var outlineWidth = parseInt(dom['outline-width'].value, 10);
+  var align = dom.align.value;
+  var baseline = dom.baseline.value;
+  var size = dom.size.value;
+  var offsetX = parseInt(dom.offsetX.value, 10);
+  var offsetY = parseInt(dom.offsetY.value, 10);
+  var weight = dom.weight.value;
+  var rotation = parseFloat(dom.rotation.value);
+  var font = weight + ' ' + size + ' ' + dom.font.value;
+  var fillColor = dom.color.value;
+  var outlineColor = dom.outline.value;
+  var outlineWidth = parseInt(dom.outlineWidth.value, 10);
 
   return new ol.style.Text({
     textAlign: align,
@@ -195,17 +195,17 @@ var map = new ol.Map({
   })
 });
 
-var refreshPoints = function() {
+$('#refresh-points').click(function() {
   vectorPoints.setStyle(createPointStyleFunction());
-};
+});
 
-var refreshLines = function() {
+$('#refresh-lines').click(function() {
   vectorLines.setStyle(createLineStyleFunction());
-};
+});
 
-var refreshPolygons = function() {
+$('#refresh-polygons').click(function() {
   vectorPolygons.setStyle(createPolygonStyleFunction());
-};
+});
 
 
 /**
diff --git a/externs/closure-compiler.js b/externs/closure-compiler.js
index a48a5827b0..eadd9ab7cf 100644
--- a/externs/closure-compiler.js
+++ b/externs/closure-compiler.js
@@ -52,3 +52,22 @@ Document.prototype.msFullscreenEnabled;
 
 /** @type {Element} */
 Document.prototype.msFullscreenElement;
+
+
+/** @type {number} */
+Touch.prototype.force;
+
+/** @type {number} */
+Touch.prototype.radiusX;
+
+/** @type {number} */
+Touch.prototype.radiusY;
+
+/** @type {number} */
+Touch.prototype.webkitForce;
+
+/** @type {number} */
+Touch.prototype.webkitRadiusX;
+
+/** @type {number} */
+Touch.prototype.webkitRadiusY;
diff --git a/package.json b/package.json
index 49896fe338..fd4defd2bf 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   "devDependencies": {
     "closure-util": "~0.8.2",
     "async": "~0.2.10",
-    "htmlparser2": "~3.4.0"
+    "htmlparser2": "~3.4.0",
+    "jshint": "~2.4.4"
   }
 }
diff --git a/src/ol/coordinate.js b/src/ol/coordinate.js
index e027da504d..81838416aa 100644
--- a/src/ol/coordinate.js
+++ b/src/ol/coordinate.js
@@ -66,7 +66,7 @@ ol.coordinate.closestOnSegment = function(coordinate, segment) {
   var y2 = end[1];
   var dx = x2 - x1;
   var dy = y2 - y1;
-  var along = (dx == 0 && dy == 0) ? 0 :
+  var along = (dx === 0 && dy === 0) ? 0 :
       ((dx * (x0 - x1)) + (dy * (y0 - y1))) / ((dx * dx + dy * dy) || 0);
   var x, y;
   if (along <= 0) {
diff --git a/src/ol/format/gmlformat.js b/src/ol/format/gmlformat.js
index b98ad70adc..dfe7385ace 100644
--- a/src/ol/format/gmlformat.js
+++ b/src/ol/format/gmlformat.js
@@ -1632,9 +1632,10 @@ ol.format.GML.GEOMETRY_NODE_FACTORY_ = function(value, objectStack,
   var multiCurve = goog.object.get(context, 'multiCurve');
   var parentNode = objectStack[objectStack.length - 1].node;
   goog.asserts.assert(ol.xml.isNode(parentNode));
+  var nodeName;
   if (!goog.isArray(value)) {
     goog.asserts.assertInstanceof(value, ol.geom.Geometry);
-    var nodeName = value.getType();
+    nodeName = value.getType();
     if (nodeName === 'MultiPolygon' && multiSurface === true) {
       nodeName = 'MultiSurface';
     } else if (nodeName === 'Polygon' && surface === true) {
diff --git a/src/ol/format/gpxformat.js b/src/ol/format/gpxformat.js
index 8dbe7cdba8..adfe131fee 100644
--- a/src/ol/format/gpxformat.js
+++ b/src/ol/format/gpxformat.js
@@ -490,6 +490,7 @@ ol.format.GPX.writeWptType_ = function(node, coordinate, objectStack) {
   ol.xml.setAttributeNS(node, null, 'lat', coordinate[1]);
   ol.xml.setAttributeNS(node, null, 'lon', coordinate[0]);
   var geometryLayout = goog.object.get(context, 'geometryLayout');
+  /* jshint -W086 */
   switch (geometryLayout) {
     case ol.geom.GeometryLayout.XYZM:
       if (coordinate[3] !== 0) {
@@ -505,6 +506,7 @@ ol.format.GPX.writeWptType_ = function(node, coordinate, objectStack) {
         goog.object.set(properties, 'time', coordinate[2]);
       }
   }
+  /* jshint +W086 */
   var orderedKeys = ol.format.GPX.WPT_TYPE_SEQUENCE_[namespaceURI];
   var values = ol.xml.makeSequence(properties, orderedKeys);
   ol.xml.pushSerializeAndPop(/** @type {ol.xml.NodeStackItem} */
diff --git a/src/ol/map.js b/src/ol/map.js
index fbe46a52cd..a2b90479a1 100644
--- a/src/ol/map.js
+++ b/src/ol/map.js
@@ -1265,7 +1265,7 @@ ol.Map.prototype.renderFrame_ = function(time) {
     Array.prototype.push.apply(
         this.postRenderFunctions_, frameState.postRenderFunctions);
 
-    var idle = this.preRenderFunctions_.length == 0 &&
+    var idle = this.preRenderFunctions_.length === 0 &&
         !frameState.animate &&
         !frameState.viewHints[ol.ViewHint.ANIMATING] &&
         !frameState.viewHints[ol.ViewHint.INTERACTING];
diff --git a/src/ol/mapbrowserevent.js b/src/ol/mapbrowserevent.js
index f2b7bdcb99..b1bd271e83 100644
--- a/src/ol/mapbrowserevent.js
+++ b/src/ol/mapbrowserevent.js
@@ -323,7 +323,7 @@ ol.MapBrowserEventHandler.prototype.isMouseActionButton_ =
   if (ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) {
     return pointerEvent.button == 1;
   } else {
-    return pointerEvent.button == 0;
+    return pointerEvent.button === 0;
   }
 };
 
diff --git a/src/ol/pointer/touchsource.js b/src/ol/pointer/touchsource.js
index f621ef7207..db7351855c 100644
--- a/src/ol/pointer/touchsource.js
+++ b/src/ol/pointer/touchsource.js
@@ -193,9 +193,9 @@ ol.pointer.TouchSource.prototype.touchToPointer_ =
   e.detail = this.clickCount_;
   e.button = 0;
   e.buttons = 1;
-  e.width = inTouch['webkitRadiusX'] || inTouch['radiusX'] || 0;
-  e.height = inTouch['webkitRadiusY'] || inTouch['radiusY'] || 0;
-  e.pressure = inTouch['webkitForce'] || inTouch['force'] || 0.5;
+  e.width = inTouch.webkitRadiusX || inTouch.radiusX || 0;
+  e.height = inTouch.webkitRadiusY || inTouch.radiusY || 0;
+  e.pressure = inTouch.webkitForce || inTouch.force || 0.5;
   e.isPrimary = this.isPrimaryTouch_(inTouch);
   e.pointerType = ol.pointer.TouchSource.POINTER_TYPE;
 
diff --git a/src/ol/source/imagewmssource.js b/src/ol/source/imagewmssource.js
index fbff7861d6..dec6944151 100644
--- a/src/ol/source/imagewmssource.js
+++ b/src/ol/source/imagewmssource.js
@@ -272,7 +272,9 @@ ol.source.ImageWMS.prototype.getRequestUrl_ =
   params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
 
   if (!('STYLES' in this.params_)) {
+    /* jshint -W053 */
     goog.object.set(params, 'STYLES', new String(''));
+    /* jshint +W053 */
   }
 
   if (pixelRatio != 1) {
diff --git a/src/ol/source/tilewmssource.js b/src/ol/source/tilewmssource.js
index 9a3a927f93..98336f839a 100644
--- a/src/ol/source/tilewmssource.js
+++ b/src/ol/source/tilewmssource.js
@@ -237,7 +237,9 @@ ol.source.TileWMS.prototype.getRequestUrl_ =
   params[this.v13_ ? 'CRS' : 'SRS'] = projection.getCode();
 
   if (!('STYLES' in this.params_)) {
+    /* jshint -W053 */
     goog.object.set(params, 'STYLES', new String(''));
+    /* jshint +W053 */
   }
 
   if (pixelRatio != 1) {
diff --git a/src/ol/source/wmtssource.js b/src/ol/source/wmtssource.js
index bd0d7c514b..9bd0ce9c5c 100644
--- a/src/ol/source/wmtssource.js
+++ b/src/ol/source/wmtssource.js
@@ -243,6 +243,8 @@ ol.source.WMTS.prototype.updateDimensions = function(dimensions) {
  */
 ol.source.WMTS.optionsFromCapabilities = function(wmtsCap, layer) {
 
+  /* jshint -W069 */
+
   // TODO: add support for TileMatrixLimits
 
   var layers = wmtsCap['contents']['layers'];
@@ -328,4 +330,7 @@ ol.source.WMTS.optionsFromCapabilities = function(wmtsCap, layer) {
     style: style,
     dimensions: dimensions
   };
+
+  /* jshint +W069 */
+
 };
diff --git a/test/spec/ol/pointer/touchsource.test.js b/test/spec/ol/pointer/touchsource.test.js
index c01c2e2608..a090007ab1 100644
--- a/test/spec/ol/pointer/touchsource.test.js
+++ b/test/spec/ol/pointer/touchsource.test.js
@@ -118,8 +118,7 @@ describe('ol.pointer.TouchSource', function() {
   });
 
   function simulateTouchEvent(type, changedTouches, touches) {
-    var touches = goog.isDef(touches) ?
-        touches : changedTouches;
+    touches = goog.isDef(touches) ? touches : changedTouches;
 
     var event = new goog.events.BrowserEvent({
       type: type,
diff --git a/test/spec/ol/proj/proj.test.js b/test/spec/ol/proj/proj.test.js
index b373299a58..7cbc59d016 100644
--- a/test/spec/ol/proj/proj.test.js
+++ b/test/spec/ol/proj/proj.test.js
@@ -285,7 +285,7 @@ describe('ol.proj', function() {
         units: units,
         extent: extent
       });
-      var transform = function(input, output, dimension) {return input};
+      var transform = function(input, output, dimension) {return input;};
       ol.proj.addTransform(foo, bar, transform);
       expect(ol.proj.transforms_).not.to.be(undefined);
       expect(ol.proj.transforms_.foo).not.to.be(undefined);