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Adding a performance file to can.Control
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ccummings committed Jul 31, 2012
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<!DOCTYPE HTML>
<html lang="en">
<head>
<title>Playground</title>
</head>
<style type="text/css">
body { font-family: verdana } .tabs { padding: 0px; margin: 0px; } .tabs li { float:
left; padding: 10px; background-color: #F6F6F6; list-style: none; margin-left: 10px;
} .tabs li a { color: #1C94C4; font-weight: bold; text-decoration: none; } .tabs
li.active a { color: #F6A828; cursor: default; } .tab { border: solid 1px #F6A828;
} /* clearfix from jQueryUI */ .ui-helper-clearfix:after { content: "."; display:
block; height: 0; clear: both; visibility: hidden; } .ui-helper-clearfix { display:
inline-block; } /* required comment for clearfix to work in Opera \*/ * html .ui-helper-clearfix
{ height:1%; } .ui-helper-clearfix { display:block; } /* end clearfix */
</style>
<body>
<p>In <a href="http://jsperf.com/tabs-timing-test/6" target="_blank">synch</a> mode:<br>Can ~300<br>Backbone ~ 450<br>Ember ~1400</p>
<p>In <a href="http://jsperf.com/tabs-timing-test/4" target="_blank">asynch</a> mode:<br>Can ~150<br>Backbone ~150<br>Ember ~90</p>
<button id="doCan">CanJS</button>
<button id="doBackbone">Backbone</button>
<button id="doEmber">Ember</button>
<button id="reset">Reset</button>
<div id="container"></div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="http://canjs.us/release/latest/can.jquery.js"></script>
<script src="http://cloud.github.com/downloads/emberjs/ember.js/ember-0.9.7.1.min.js"></script>
<script src="http://cloud.github.com/downloads/SteveSanderson/knockout/knockout-2.1.0.js"></script>
<script src="http://underscorejs.org/underscore-min.js"></script>
<script src="http://backbonejs.org/backbone-min.js"></script>
<script type="text/x-handlebars" data-template-name="emberTpl">
<div class="wrapper">
<ul class="tabs ui-helper-clearfix">
<li>
<a href="#">Tab 1</a>
</li>
<li>
<a href="#">Tab 2</a>
</li>
<li>
<a href="#">Tab 3</a>
</li>
</ul>
<div class="tab">
Tab 1 Content
</div>
<div class="tab">
Tab 2 Content
</div>
<div class="tab">
Tab 3 Content
</div>
</div>
</script>
<div style="display: none">
<div id="tabView">
<ul class="tabs ui-helper-clearfix">
<li>
<a href="#">Tab 1</a>
</li>
<li>
<a href="#">Tab 2</a>
</li>
<li>
<a href="#">Tab 3</a>
</li>
</ul>
<div class="tab">
Tab 1 Content
</div>
<div class="tab">
Tab 2 Content
</div>
<div class="tab">
Tab 3 Content
</div>
</div>
</div>
<script>
var container = $('#container'),
tabView = $('#tabView').html(),
runs = 100;

var CanTabs = can.Control({
init: function(el) {

// activate the first tab
this.element.find('li:first').addClass('active');

// hide the other tabs
var self = this;
this.element.find('li:gt(0)').each(function() {
self.tab($(this)).hide();
});
},

// helper function finds the tab for a given li
tab: function(li) {
return this.element.find('.tab:eq(' + li.index() + ')');
},

// hides old active tab, shows new one
'li click': function(el, ev) {
ev.preventDefault();
this.tab(this.element.find('.active').removeClass('active')).hide();
this.tab(el.addClass('active')).show();
}
});

var BBTabs = Backbone.View.extend({
events: {
'click li': 'activate'
},

render: function() {
this.$el.find('li:first').addClass('active');

var self = this;
this.$el.find('li:gt(0)').each(function() {
self.tab($(this)).hide();
});
},

tab: function(li) {
return this.$el.find('.tab:eq(' + li.index() + ')');
},

activate: function(ev) {
ev.originalEvent.preventDefault();
this.tab(this.$el.find('.active').removeClass('active')).hide();
this.tab($(ev.currentTarget).addClass('active')).show();
}
});

App = Ember.Application.create();
App.Tabs = Em.View.extend({
templateName: "emberTpl",
id: "df",
didInsertElement: function(){
var el = $(Ember.get(this, 'element')),
tab = Ember.get(this, 'tab'),
self = this;
el.find('li:first').addClass('active');
el.find('li:gt(0)').each(function(){
tab.apply(self, [$(this)]).hide();
});
},
tab: function(li){
var el = this.$('.wrapper');
return el.find('.tab:eq(' + li.index() + ')');
},
click: function(e){
var el = this.$('.wrapper'),
li = $(e.target).parent(),
tab = Ember.get(this, 'tab');
if(li.is('li')) {
tab.apply(this, [el.find('.active').removeClass('active')]).hide();
tab.apply(this, [li.addClass('active')]).show();
}
}
});
function doCan() {
for(i = 0; i < runs; i++) {
var el = container.append('<div>').children(':last').append(tabView);
new CanTabs(el);
}
}

function doBackbone() {
for(i = 0; i < runs; i++) {
var el = container.append('<div>').children(':last').append(tabView);
new BBTabs({
el: el
}).render();
}
}
function doEmber() {
for(i = 0; i < runs; i++) {
App.Tabs.create().appendTo('#container');
}
}

window.reset = function() {
$('#container').html('')
};
$(function(){
$('#doCan').on('click', function(){
window.doCan();
})
$('#doBackbone').on('click', function(){
window.doBackbone();
})
$('#doEmber').on('click', function(){
window.doEmber();
})
$('#reset').on('click', function(){
window.reset();
})
})
</script>
</body>
</html>

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