diff --git a/.bzrignore b/.bzrignore
index e7618c7b0ce..86a1881981f 100644
--- a/.bzrignore
+++ b/.bzrignore
@@ -1,21 +1,15 @@
-.*.swp
-.bzrignore
-.idea
-.project
-.pydevproject
-.ropeproject
-.settings
-.DS_Store
-openerp/addons/*
-openerp/filestore*
-.Python
-*.pyc
-*.pyo
-bin/*
+.*
+*.egg-info
+*.orig
+*.vim
 build/
-include/
-lib/
-share/
-doc/_build/*
-win32/*.bat
-win32/meta.py
+RE:^bin/
+RE:^dist/
+RE:^include/
+
+RE:^share/
+RE:^man/
+RE:^lib/
+
+RE:^addons/\w+/doc/_build/
+RE:^.*?/node_modules
diff --git a/addons/web/Gruntfile.js b/addons/web/Gruntfile.js
new file mode 100644
index 00000000000..6561aecd3bd
--- /dev/null
+++ b/addons/web/Gruntfile.js
@@ -0,0 +1,22 @@
+module.exports = function(grunt) {
+
+  grunt.initConfig({
+    jshint: {
+      files: ['static/src/**/*.js'],
+      options: {
+        sub: true, //[] instead of .
+        asi: true, //semicolons
+        evil: true, //eval
+        laxbreak: true, //unsafe line breaks
+        loopfunc: true, // functions in loops
+      },
+    }
+  });
+
+  grunt.loadNpmTasks('grunt-contrib-jshint');
+
+  grunt.registerTask('test', ['jshint']);
+
+  grunt.registerTask('default', ['jshint']);
+
+};
\ No newline at end of file
diff --git a/addons/web/package.json b/addons/web/package.json
new file mode 100644
index 00000000000..f8dfc2879d6
--- /dev/null
+++ b/addons/web/package.json
@@ -0,0 +1,6 @@
+{
+  "devDependencies": {
+    "grunt": "~0.4.1",
+    "grunt-contrib-jshint": "~0.6.0"
+  }
+}
\ No newline at end of file
diff --git a/addons/web/static/src/js/chrome.js b/addons/web/static/src/js/chrome.js
index 89c44a9b7ed..5ecfb5a9943 100644
--- a/addons/web/static/src/js/chrome.js
+++ b/addons/web/static/src/js/chrome.js
@@ -1108,7 +1108,7 @@ instance.web.Menu =  instance.web.Widget.extend({
                     add_menu_ids(menu);
                 });
             }
-        };
+        }
         add_menu_ids(menu);
         self.do_load_needaction(menu_ids).then(function () {
             self.trigger("need_action_reloaded");
diff --git a/addons/web/static/src/js/corelib.js b/addons/web/static/src/js/corelib.js
index 58c2969bb20..a8846018e3e 100644
--- a/addons/web/static/src/js/corelib.js
+++ b/addons/web/static/src/js/corelib.js
@@ -73,7 +73,7 @@ openerp.web.corelib = function(instance) {
  */
 (function() {
     var initializing = false,
-        fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
+        fnTest = /xyz/.test(function(){xyz();}) ? /\b_super\b/ : /.*/;
     // The web Class implementation (does nothing)
     instance.web.Class = function(){};
 
@@ -123,7 +123,6 @@ openerp.web.corelib = function(instance) {
         function Class() {
             if(this.constructor !== instance.web.Class){
                 throw new Error("You can only instanciate objects with the 'new' operator");
-                return null;
             }
             // All construction is actually done in the init method
             if (!initializing && this.init) {
@@ -297,7 +296,7 @@ var Events = instance.web.Class.extend({
         var ev;
         events = events.split(/\s+/);
         var calls = this._callbacks || (this._callbacks = {});
-        while (ev = events.shift()) {
+        while ((ev = events.shift())) {
             var list = calls[ev] || (calls[ev] = {});
             var tail = list.tail || (list.tail = list.next = {});
             tail.callback = callback;
@@ -311,9 +310,9 @@ var Events = instance.web.Class.extend({
         var ev, calls, node;
         if (!events) {
             delete this._callbacks;
-        } else if (calls = this._callbacks) {
+        } else if ((calls = this._callbacks)) {
             events = events.split(/\s+/);
-            while (ev = events.shift()) {
+            while ((ev = events.shift())) {
                 node = calls[ev];
                 delete calls[ev];
                 if (!callback || !node)
@@ -347,7 +346,7 @@ var Events = instance.web.Class.extend({
         all = calls['all'];
         (events = events.split(/\s+/)).push(null);
         // Save references to the current heads & tails.
-        while (event = events.shift()) {
+        while ((event = events.shift())) {
             if (all)
                 events.push({
                     next : all.next,
@@ -362,7 +361,7 @@ var Events = instance.web.Class.extend({
             });
         }
         rest = Array.prototype.slice.call(arguments, 1);
-        while (node = events.pop()) {
+        while ((node = events.pop())) {
             tail = node.tail;
             args = node.event ? [ node.event ].concat(rest) : rest;
             while ((node = node.next) !== tail) {
@@ -692,11 +691,6 @@ instance.web.Widget = instance.web.Controller.extend({
         insertion(target);
         return this.start();
     },
-    /**
-     * This is the method to implement to render the Widget.
-     */
-    renderElement: function() {
-    },
     /**
      * Method called after rendering. Mostly used to bind actions, perform asynchronous
      * calls, etc...
@@ -966,7 +960,7 @@ instance.web.JsonRPC = instance.web.Class.extend(instance.web.PropertiesMixin, {
     init: function() {
         instance.web.PropertiesMixin.init.call(this);
         this.server = null;
-        this.debug = ($.deparam($.param.querystring()).debug != undefined);
+        this.debug = ($.deparam($.param.querystring()).debug !== undefined);
         this.override_session = false;
         this.session_id = undefined;
     },
diff --git a/addons/web/static/src/js/coresetup.js b/addons/web/static/src/js/coresetup.js
index c9c6f82a98d..b3adea81a60 100644
--- a/addons/web/static/src/js/coresetup.js
+++ b/addons/web/static/src/js/coresetup.js
@@ -250,7 +250,7 @@ instance.web.Session = instance.web.JsonRPC.extend( /** @lends instance.web.Sess
                 continue;
             instance[mod] = {};
             // init module mod
-            if(instance._openerp[mod] != undefined) {
+            if(instance._openerp[mod] !== undefined) {
                 instance._openerp[mod](instance,instance[mod]);
                 this.module_loaded[mod] = true;
             }
@@ -585,7 +585,7 @@ instance.web.qweb.preprocess_node = function() {
         case Node.ELEMENT_NODE:
             // Element
             var attr, attrs = ['label', 'title', 'alt', 'placeholder'];
-            while (attr = attrs.pop()) {
+            while ((attr = attrs.pop())) {
                 if (this.attributes[attr]) {
                     this.attributes[attr] = instance.web._t(this.attributes[attr]);
                 }
diff --git a/addons/web/static/src/js/data.js b/addons/web/static/src/js/data.js
index 679afe77bcd..79ec160eb70 100644
--- a/addons/web/static/src/js/data.js
+++ b/addons/web/static/src/js/data.js
@@ -100,7 +100,7 @@ instance.web.Query = instance.web.Class.extend({
      * @returns {jQuery.Deferred<Number>}
      */
     count: function () {
-        if (this._count != undefined) { return $.when(this._count); }
+        if (this._count !== undefined) { return $.when(this._count); }
         return this._model.call(
             'search_count', [this._filter], {
                 context: this._model.context(this._context)});
@@ -747,7 +747,7 @@ instance.web.DataSetSearch =  instance.web.DataSet.extend({
         });
     },
     size: function () {
-        if (this._length != null) {
+        if (this._length !== null) {
             return this._length;
         }
         return this._super();
diff --git a/addons/web/static/src/js/data_export.js b/addons/web/static/src/js/data_export.js
index fb5e391effd..7a390d0819f 100644
--- a/addons/web/static/src/js/data_export.js
+++ b/addons/web/static/src/js/data_export.js
@@ -93,7 +93,7 @@ instance.web.DataExport = instance.web.Dialog.extend({
                 self.$el.find('#fields_list option').remove();
                 var export_id = self.$el.find('#saved_export_list option:selected').val();
                 if (export_id) {
-                    self.rpc('/web/export/namelist', {'model': self.dataset.model, export_id: parseInt(export_id)}).done(self.do_load_export_field);
+                    self.rpc('/web/export/namelist', {'model': self.dataset.model, export_id: parseInt(export_id, 10)}).done(self.do_load_export_field);
                 }
             });
             self.$el.find('#delete_export_list').click(function() {
@@ -215,7 +215,7 @@ instance.web.DataExport = instance.web.Dialog.extend({
             self.$el.find("tr[id='treerow-" + record.id + "']").click(function(e) {
                 if (e.shiftKey) {
                     var frst_click, scnd_click = '';
-                    if (self.row_index == 0) {
+                    if (self.row_index === 0) {
                         self.row_index = this.rowIndex;
                         frst_click = self.$el.find("tr[id^='treerow-']")[self.row_index-1];
                         $(frst_click).addClass("ui-selected");
diff --git a/addons/web/static/src/js/formats.js b/addons/web/static/src/js/formats.js
index 851b60af229..f4df990675c 100644
--- a/addons/web/static/src/js/formats.js
+++ b/addons/web/static/src/js/formats.js
@@ -141,6 +141,7 @@ instance.web.format_value = function (value, descriptor, value_if_empty) {
                 return '';
             }
             console.warn('Field', descriptor, 'had an empty string as value, treating as false...');
+            return value_if_empty === undefined ?  '' : value_if_empty;
         case false:
         case Infinity:
         case -Infinity:
@@ -219,9 +220,9 @@ instance.web.parse_value = function (value, descriptor, value_if_empty) {
         case "":
             return value_if_empty === undefined ?  false : value_if_empty;
     }
+    var tmp;
     switch (descriptor.widget || descriptor.type || (descriptor.field && descriptor.field.type)) {
         case 'integer':
-            var tmp;
             do {
                 tmp = value;
                 value = value.replace(instance.web._t.database.parameters.thousands_sep, "");
@@ -231,7 +232,7 @@ instance.web.parse_value = function (value, descriptor, value_if_empty) {
                 throw new Error(_.str.sprintf(_t("'%s' is not a correct integer"), value));
             return tmp;
         case 'float':
-            var tmp = Number(value);
+            tmp = Number(value);
             if (!isNaN(tmp))
                 return tmp;
 
@@ -314,4 +315,34 @@ instance.web.auto_date_to_str = function(value, type) {
     }
 };
 
+/**
+ * performs a half up rounding with arbitrary precision, correcting for float loss of precision
+ * See the corresponding float_round() in server/tools/float_utils.py for more info
+ * @param {Number} the value to be rounded
+ * @param {Number} a non zero precision parameter. eg: 0.01 rounds to two digits.
+ */
+instance.web.round_precision = function(value, precision){
+    if(!value){
+        return 0;
+    }else if(!precision){
+        throw new Error('round_precision(...):  Cannot round value: '+value+' with a precision of zero (or undefined)');
+    }
+    var normalized_value = value / precision;
+    var epsilon_magnitude = Math.log(Math.abs(normalized_value))/Math.log(2);
+    var epsilon = Math.pow(2, epsilon_magnitude - 53);
+    normalized_value += normalized_value >= 0 ? epsilon : -epsilon;
+    var rounded_value = Math.round(normalized_value);
+    return rounded_value * precision;
+};
+
+/**
+ * performs a half up rounding with a fixed amount of decimals, correcting for float loss of precision
+ * See the corresponding float_round() in server/tools/float_utils.py for more info
+ * @param {Number} the value to be rounded
+ * @param {Number} the number of decimals. eg: round_decimals(3.141592,2) -> 3.14
+ */
+instance.web.round_decimals = function(value, decimals){
+    return instance.web.round_precision(value, Math.pow(10,-decimals));
+};
+
 };
diff --git a/addons/web/static/src/js/pyeval.js b/addons/web/static/src/js/pyeval.js
index 6ce85f8d4a3..02d828001c0 100644
--- a/addons/web/static/src/js/pyeval.js
+++ b/addons/web/static/src/js/pyeval.js
@@ -795,11 +795,18 @@ openerp.web.pyeval = function (instance) {
 
         //noinspection FallthroughInSwitchStatementJS
         switch(type) {
-        case 'context': object = [object];
-        case 'contexts': return eval_contexts((options.no_user_context ? [] : [instance.session.user_context]).concat(object), context);
-        case 'domain': object = [object];
-        case 'domains': return eval_domains(object, context);
-        case 'groupbys': return eval_groupbys(object, context);
+        case 'context':
+        case 'contexts':
+            if (type === 'context')
+                object = [object];
+            return eval_contexts((options.no_user_context ? [] : [instance.session.user_context]).concat(object), context);
+        case 'domain':
+        case 'domains':
+            if (type === 'domain')
+                object = [object];
+            return eval_domains(object, context);
+        case 'groupbys':
+            return eval_groupbys(object, context);
         }
         throw new Error("Unknow evaluation type " + type)
     };
diff --git a/addons/web/static/src/js/search.js b/addons/web/static/src/js/search.js
index 5d06d75573f..12e1c2bc0ec 100644
--- a/addons/web/static/src/js/search.js
+++ b/addons/web/static/src/js/search.js
@@ -65,7 +65,7 @@ my.SearchQuery = B.Collection.extend({
         }, this);
     },
     add: function (values, options) {
-        options || (options = {});
+        options = options || {};
         if (!(values instanceof Array)) {
             values = [values];
         }
@@ -85,7 +85,7 @@ my.SearchQuery = B.Collection.extend({
         return this;
     },
     toggle: function (value, options) {
-        options || (options = {});
+        options = options || {};
 
         var facet = this.detect(function (facet) {
             return facet.get('category') === value.category
@@ -1107,7 +1107,7 @@ instance.web.search.FilterGroup = instance.web.search.Input.extend(/** @lends in
 
         if (!contexts.length) { return; }
         if (contexts.length === 1) { return contexts[0]; }
-        return _.extend(new instance.web.CompoundContext, {
+        return _.extend(new instance.web.CompoundContext(), {
             __contexts: contexts
         });
     },
@@ -1276,7 +1276,7 @@ instance.web.search.Field = instance.web.search.Input.extend( /** @lends instanc
 
         if (contexts.length === 1) { return contexts[0]; }
 
-        return _.extend(new instance.web.CompoundContext, {
+        return _.extend(new instance.web.CompoundContext(), {
             __contexts: contexts
         });
     },
@@ -1321,7 +1321,7 @@ instance.web.search.Field = instance.web.search.Input.extend( /** @lends instanc
             domains.unshift(['|']);
         }
 
-        return _.extend(new instance.web.CompoundDomain, {
+        return _.extend(new instance.web.CompoundDomain(), {
             __domains: domains
         });
     }
@@ -1919,7 +1919,7 @@ instance.web.search.ExtendedSearchProposition = instance.web.Widget.extend(/** @
     },
     changed: function() {
         var nval = this.$(".searchview_extended_prop_field").val();
-        if(this.attrs.selected == null || nval != this.attrs.selected.name) {
+        if(this.attrs.selected === null || this.attrs.selected === undefined || nval != this.attrs.selected.name) {
             this.select_field(_.detect(this.fields, function(x) {return x.name == nval;}));
         }
     },
@@ -1941,13 +1941,13 @@ instance.web.search.ExtendedSearchProposition = instance.web.Widget.extend(/** @
      */
     select_field: function(field) {
         var self = this;
-        if(this.attrs.selected != null) {
+        if(this.attrs.selected !== null && this.attrs.selected !== undefined) {
             this.value.destroy();
             this.value = null;
             this.$('.searchview_extended_prop_op').html('');
         }
         this.attrs.selected = field;
-        if(field == null) {
+        if(field === null || field === undefined) {
             return;
         }
 
@@ -1967,7 +1967,7 @@ instance.web.search.ExtendedSearchProposition = instance.web.Widget.extend(/** @
 
     },
     get_proposition: function() {
-        if ( this.attrs.selected == null)
+        if (this.attrs.selected === null || this.attrs.selected === undefined)
             return null;
         var field = this.attrs.selected;
         var op_select = this.$('.searchview_extended_prop_op')[0];
@@ -2097,7 +2097,7 @@ instance.web.search.ExtendedSearchProposition.Integer = instance.web.search.Exte
     get_value: function() {
         try {
             var val =this.$el.val();
-            return instance.web.parse_value(val == "" ? 0 : val, {'widget': 'integer'});
+            return instance.web.parse_value(val === "" ? 0 : val, {'widget': 'integer'});
         } catch (e) {
             return "";
         }
@@ -2124,7 +2124,7 @@ instance.web.search.ExtendedSearchProposition.Float = instance.web.search.Extend
     get_value: function() {
         try {
             var val =this.$el.val();
-            return instance.web.parse_value(val == "" ? 0.0 : val, {'widget': 'float'});
+            return instance.web.parse_value(val === "" ? 0.0 : val, {'widget': 'float'});
         } catch (e) {
             return "";
         }
diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index d2f55c0901e..0f33de0814e 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -346,7 +346,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
             self.on_form_changed();
             self.rendering_engine.init_fields();
             self.is_initialized.resolve();
-            self.do_update_pager(record.id == null);
+            self.do_update_pager(record.id === null || record.id === undefined);
             if (self.sidebar) {
                self.sidebar.do_attachement_update(self.dataset, self.datarecord.id);
             }
@@ -465,7 +465,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
             // form field
             if (self.fields[field]) {
                 var value_ = self.fields[field].get_value();
-                return value_ == null ? false : value_;
+                return value_ === null || value_ === undefined ? false : value_;
             }
             // parent field
             var splitted = field.split('.');
@@ -475,7 +475,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
                 }
                 var p_val = parent_fields[_.str.trim(splitted[1])];
                 if (p_val !== undefined) {
-                    return p_val == null ? false : p_val;
+                    return p_val === null || p_val === undefined ? false : p_val;
                 }
             }
             // string literal
@@ -621,7 +621,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
                     }
                     return $.when();
                 });
-            };
+            }
             return iterate();
         });
     },
@@ -943,11 +943,11 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
     reload: function() {
         var self = this;
         return this.reload_mutex.exec(function() {
-            if (self.dataset.index == null) {
+            if (self.dataset.index === null || self.dataset.index === undefined) {
                 self.trigger("previous_view");
                 return $.Deferred().reject().promise();
             }
-            if (self.dataset.index == null || self.dataset.index < 0) {
+            if (self.dataset.index < 0) {
                 return $.when(self.on_button_new());
             } else {
                 var fields = _.keys(self.fields_view.fields);
@@ -1714,7 +1714,7 @@ instance.web.form.compute_domain = function(expr, fields) {
 };
 
 instance.web.form.is_bin_size = function(v) {
-    return /^\d+(\.\d*)? \w+$/.test(v);
+    return (/^\d+(\.\d*)? \w+$/).test(v);
 };
 
 /**
@@ -2642,7 +2642,7 @@ instance.web.form.FieldText = instance.web.form.AbstractField.extend(instance.we
         if (! this.get("effective_readonly")) {
             var show_value = instance.web.format_value(this.get('value'), this, '');
             if (show_value === '') {
-                this.$textarea.css('height', parseInt(this.default_height)+"px");
+                this.$textarea.css('height', parseInt(this.default_height, 10)+"px");
             }
             this.$textarea.val(show_value);
             if (! this.auto_sized) {
@@ -3265,7 +3265,7 @@ instance.web.form.FieldMany2One = instance.web.form.AbstractField.extend(instanc
         this.$input.keydown(input_changed);
         this.$input.change(input_changed);
         this.$drop_down.click(function() {
-        	self.$input.focus();
+            self.$input.focus();
             if (self.$input.autocomplete("widget").is(":visible")) {
                 self.$input.autocomplete("close");                
             } else {
@@ -3740,7 +3740,7 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
     },
     reload_current_view: function() {
         var self = this;
-        return self.is_loaded = self.is_loaded.then(function() {
+        self.is_loaded = self.is_loaded.then(function() {
             var active_view = self.viewmanager.active_view;
             var view = self.viewmanager.views[active_view].controller;
             if(active_view === "list") {
@@ -3758,13 +3758,15 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
                 return view.do_search(self.build_domain(), self.dataset.get_context(), []);
             }
         }, undefined);
+        return self.is_loaded;
     },
     set_value: function(value_) {
         value_ = value_ || [];
         var self = this;
         this.dataset.reset_ids([]);
+        var ids;
         if(value_.length >= 1 && value_[0] instanceof Array) {
-            var ids = [];
+            ids = [];
             _.each(value_, function(command) {
                 var obj = {values: command[2]};
                 switch (command[0]) {
@@ -3795,7 +3797,7 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
             this._super(ids);
             this.dataset.set_ids(ids);
         } else if (value_.length >= 1 && typeof(value_[0]) === "object") {
-            var ids = [];
+            ids = [];
             this.dataset.delete_all = true;
             _.each(value_, function(command) {
                 var obj = {values: command};
@@ -3850,7 +3852,7 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
             this.viewmanager.views[this.viewmanager.active_view].controller) {
             var view = this.viewmanager.views[this.viewmanager.active_view].controller;
             if (this.viewmanager.active_view === "form") {
-                if (!view.is_initialized.state() === 'resolved') {
+                if (view.is_initialized.state() !== 'resolved') {
                     return $.when(false);
                 }
                 return $.when(view.save());
@@ -3870,7 +3872,6 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
                 .invoke('is_valid')
                 .all(_.identity)
                 .value();
-            break;
         case 'list':
             return view.is_valid();
         }
@@ -4256,7 +4257,7 @@ instance.web.form.FieldMany2ManyTags = instance.web.form.AbstractField.extend(in
                 },
                 core: {
                     onSetInputData: function(e, data) {
-                        if (data == '') {
+                        if (data === '') {
                             this._plugins.autocomplete._suggestions = null;
                         }
                         this.input().val(data);
@@ -4578,8 +4579,9 @@ instance.web.form.FieldMany2ManyKanban = instance.web.form.AbstractField.extend(
         if (type !== "form")
             return;
         var self = this;
+        var pop;
         if (this.dataset.index === null) {
-            var pop = new instance.web.form.SelectCreatePopup(this);
+            pop = new instance.web.form.SelectCreatePopup(this);
             pop.select_element(
                 this.field.relation,
                 {
@@ -4599,7 +4601,7 @@ instance.web.form.FieldMany2ManyKanban = instance.web.form.AbstractField.extend(
             });
         } else {
             var id = self.dataset.ids[self.dataset.index];
-            var pop = new instance.web.form.FormOpenPopup(this);
+            pop = new instance.web.form.FormOpenPopup(this);
             pop.show_element(self.field.relation, id, self.build_context(), {
                 title: _t("Open: ") + self.string,
                 write_function: function(id, data, options) {
@@ -4935,7 +4937,7 @@ instance.web.form.SelectCreatePopup = instance.web.form.AbstractFormPopup.extend
                     self.select_elements(self.selected_ids);
                     self.destroy();
                 });
-                var $cbutton = self.$buttonpane.find(".oe_selectcreatepopup-search-create");
+                $cbutton = self.$buttonpane.find(".oe_selectcreatepopup-search-create");
                 $cbutton.click(function() {
                     self.new_object();
                 });
@@ -5190,18 +5192,18 @@ instance.web.form.FieldBinaryFile = instance.web.form.FieldBinary.extend({
         }
     },
     render_value: function() {
+        var show_value;
         if (!this.get("effective_readonly")) {
-            var show_value;
             if (this.node.attrs.filename) {
                 show_value = this.view.datarecord[this.node.attrs.filename] || '';
             } else {
-                show_value = (this.get('value') != null && this.get('value') !== false) ? this.get('value') : '';
+                show_value = (this.get('value') !== null && this.get('value') !== undefined && this.get('value') !== false) ? this.get('value') : '';
             }
             this.$el.find('input').eq(0).val(show_value);
         } else {
             this.$el.find('a').toggle(!!this.get('value'));
             if (this.get('value')) {
-                var show_value = _t("Download")
+                show_value = _t("Download")
                 if (this.view)
                     show_value += " " + (this.view.datarecord[this.node.attrs.filename] || '');
                 this.$el.find('a').text(show_value);
@@ -5553,11 +5555,12 @@ instance.web.form.FieldStatus = instance.web.form.AbstractField.extend({
     on_click_stage: function (ev) {
         var self = this;
         var $li = $(ev.currentTarget);
+        var val;
         if (this.field.type == "many2one") {
-            var val = parseInt($li.data("id"));
+            val = parseInt($li.data("id"), 10);
         }
         else {
-            var val = $li.data("id");
+            val = $li.data("id");
         }
         if (val != self.get('value')) {
             this.view.recursive_save().done(function() {
diff --git a/addons/web/static/src/js/view_list.js b/addons/web/static/src/js/view_list.js
index 4f58b002328..991f4db6852 100644
--- a/addons/web/static/src/js/view_list.js
+++ b/addons/web/static/src/js/view_list.js
@@ -171,11 +171,13 @@ instance.web.ListView = instance.web.View.extend( /** @lends instance.web.ListVi
             current_date: new Date().toString('yyyy-MM-dd')
             // TODO: time, datetime, relativedelta
         });
-
+        var i;
+        var pair;
+        var expression;
         if (this.fonts) {
-            for(var i=0, len=this.fonts.length; i<len; ++i) {
-                var pair = this.fonts[i],
-                font = pair[0],
+            for(i=0, len=this.fonts.length; i<len; ++i) {
+                pair = this.fonts[i];
+                var font = pair[0];
                 expression = pair[1];
                 if (py.evaluate(expression, context).toJSON()) {
                     switch(font) {
@@ -194,10 +196,10 @@ instance.web.ListView = instance.web.View.extend( /** @lends instance.web.ListVi
         }
 
         if (!this.colors) { return style; }
-        for(var i=0, len=this.colors.length; i<len; ++i) {
-            var pair = this.colors[i],
-                color = pair[0],
-                expression = pair[1];
+        for(i=0, len=this.colors.length; i<len; ++i) {
+            pair = this.colors[i];
+            var color = pair[0];
+            expression = pair[1];
             if (py.evaluate(expression, context).toJSON()) {
                 return style += 'color: ' + color + ';';
             }
@@ -394,7 +396,7 @@ instance.web.ListView = instance.web.View.extend( /** @lends instance.web.ListVi
 
         var total = dataset.size();
         var limit = this.limit() || total;
-        if (total == 0)
+        if (total === 0)
             this.$pager.hide();
         else
             this.$pager.css("display", "");
@@ -454,7 +456,7 @@ instance.web.ListView = instance.web.View.extend( /** @lends instance.web.ListVi
      * @param {String} [view="page"] the view type to switch to
      */
     select_record:function (index, view) {
-        view = view || index == null ? 'form' : 'form';
+        view = view || index === null || index === undefined ? 'form' : 'form';
         this.dataset.index = index;
         _.delay(_.bind(function () {
             this.do_switch_view(view);
@@ -503,7 +505,7 @@ instance.web.ListView = instance.web.View.extend( /** @lends instance.web.ListVi
         var reloaded = $.Deferred();
         this.$el.find('.oe_list_content').append(
             this.groups.render(function () {
-                if (self.dataset.index == null && self.records.length ||
+                if ((self.dataset.index === null || self.dataset.index === undefined) && self.records.length ||
                     self.dataset.index >= self.records.length) {
                         self.dataset.index = 0;
                 }
@@ -1517,7 +1519,7 @@ instance.web.ListView.Groups = instance.web.Class.extend( /** @lends instance.we
                     // if drag to 1st row (to = 0), start sequencing from 0
                     // (exclusive lower bound)
                     seq = to ? list.records.at(to - 1).get(seqname) : 0;
-                while (++seq, record = list.records.at(index++)) {
+                while (++seq, (record = list.records.at(index++))) {
                     // write are independent from one another, so we can just
                     // launch them all at the same time and we don't really
                     // give a fig about when they're done
@@ -1825,7 +1827,7 @@ var Collection = instance.web.Class.extend(/** @lends Collection# */{
             var instance_ = (records[i] instanceof Record) ? records[i] : new Record(records[i]);
             instance_.bind(null, this._onRecordEvent);
             this._byId[instance_.get('id')] = instance_;
-            if (options.at == undefined) {
+            if (options.at === undefined || options.at === null) {
                 this.records.push(instance_);
                 if (!options.silent) {
                     this.trigger('add', this, instance_, this.records.length-1);
@@ -1867,7 +1869,8 @@ var Collection = instance.web.Class.extend(/** @lends Collection# */{
         if (!_(this._proxies).isEmpty()) {
             var record = null;
             _(this._proxies).detect(function (proxy) {
-                return record = proxy.get(id);
+                record = proxy.get(id);
+                return record;
             });
             return record;
         }
@@ -1881,10 +1884,11 @@ var Collection = instance.web.Class.extend(/** @lends Collection# */{
      * @returns {Collection}
      */
     proxy: function (section) {
-        return this._proxies[section] = new Collection(null, {
+        this._proxies[section] = new Collection(null, {
             parent: this,
             key: section
         }).bind(null, this._onRecordEvent);
+        return this._proxies[section];
     },
     /**
      * @param {Array} [records]
diff --git a/addons/web/static/src/js/view_list_editable.js b/addons/web/static/src/js/view_list_editable.js
index 512fc4ff373..1a06720a274 100644
--- a/addons/web/static/src/js/view_list_editable.js
+++ b/addons/web/static/src/js/view_list_editable.js
@@ -515,10 +515,6 @@ openerp.web.list_editable = function (instance) {
                 };
             } else if (document.body.createTextRange) {
                 throw new Error("Implement text range handling for MSIE");
-                var sel = document.body.createTextRange();
-                if (sel.parentElement() === el) {
-
-                }
             }
             // Element without selection ranges (select, div/@contenteditable)
             return null;
@@ -697,7 +693,7 @@ openerp.web.list_editable = function (instance) {
                 throw new Error("Editor delegate's #edition_view must have a" +
                                 " non-empty arch")
             }
-            if (!(arch.tag === "form")) {
+            if (arch.tag !== "form") {
                 throw new Error("Editor delegate's #edition_view must have a" +
                                 " 'form' root node");
             }
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index 48a108b2f01..fc67c7da24d 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -49,7 +49,7 @@ instance.web.ActionManager = instance.web.Widget.extend({
         if (last) {
             last.hide();
         }
-        var item = _.extend({
+        item = _.extend({
             show: function(index) {
                 this.widget.$el.show();
             },
@@ -423,7 +423,7 @@ instance.web.ActionManager = instance.web.Widget.extend({
 
         if (!(ClientWidget.prototype instanceof instance.web.Widget)) {
             var next;
-            if (next = ClientWidget(this, action)) {
+            if ((next = ClientWidget(this, action))) {
                 return this.do_action(next, options);
             }
             return $.when();
@@ -677,7 +677,7 @@ instance.web.ViewManager =  instance.web.Widget.extend({
         this.$el.find('.oe_view_title_text:first').text(title);
     },
     add_breadcrumb: function(options) {
-        var options = options || {};
+        options = options || {};
         var self = this;
         var views = [this.active_view || this.views_src[0].view_type];
         this.on('switch_mode', self, function(mode) {
@@ -958,7 +958,6 @@ instance.web.ViewManagerAction = instance.web.ViewManager.extend({
                     view_type : 'list',
                     view_mode : 'list'
                 });
-                break;
             case 'edit':
                 this.do_edit_resource($option.data('model'), $option.data('id'), { name : $option.text() });
                 break;
@@ -1000,7 +999,7 @@ instance.web.ViewManagerAction = instance.web.ViewManager.extend({
         evt.currentTarget.selectedIndex = 0;
     },
     do_edit_resource: function(model, id, action) {
-        var action = _.extend({
+        action = _.extend({
             res_model : model,
             res_id : id,
             type : 'ir.actions.act_window',
@@ -1038,7 +1037,7 @@ instance.web.ViewManagerAction = instance.web.ViewManager.extend({
     },
     get_action_manager: function() {
         var cur = this;
-        while (cur = cur.getParent()) {
+        while ((cur = cur.getParent())) {
             if (cur instanceof instance.web.ActionManager) {
                 return cur;
             }
@@ -1176,7 +1175,7 @@ instance.web.Sidebar = instance.web.Widget.extend({
         var self = this;
         self.getParent().sidebar_eval_context().done(function (sidebar_eval_context) {
             var ids = self.getParent().get_selected_ids();
-            if (ids.length == 0) {
+            if (ids.length === 0) {
                 instance.web.dialog($("<div />").text(_t("You must choose at least one record.")), { title: _t("Warning"), modal: true });
                 return false;
             }