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var text = new Array(500).join('-'); | |
String.prototype.getLength = function(){ | |
return this.length; | |
} | |
function getLength(str){ | |
return str.length; | |
} |
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<!doctype html> | |
<html> | |
<head> | |
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0"> | |
</head> | |
<body> | |
<pre id="out"></pre> | |
</body> | |
<script> | |
function checkSizes(){ |
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var time = Date.now(); | |
setInterval(function(){ | |
var now = Date.now(); | |
if(now - time > 5000) | |
alert('pageshow(fake)'); | |
time = now; | |
}, 1000); |
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function is(got, expected){ | |
got != expected && alert(['FAIL', got, expected].join(', ')); | |
} | |
function keys(o){ | |
var r = []; | |
for(var p in o) | |
r.push(p); | |
return r; | |
} |
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var arr1 = []; | |
var arr2 = []; | |
for(var i=0 ; i<1000000 ; i++){ | |
arr1.push(i); | |
arr2.push(i); | |
} | |
var str1 = arr1.join(','); | |
var str2 = arr2.join(','); | |
bench('==', function(){return str1 == str2}); |
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Array.prototype.stack = function(array){ | |
this.push.apply(this, array); | |
} |
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<!doctype html> | |
<html> | |
<head> | |
<meta http-equiv="content-type" content="text/html; charset=UTF-8"> | |
<style type="text/css"> | |
.frame { | |
width: 100px; | |
height: 100px; | |
border: 5px solid black; |
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<!doctype html> | |
<html> | |
<head> | |
<style type="text/css"> | |
.frame { | |
position: absolute; | |
width: 100px; | |
height: 100px; | |
} |
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var elmImage = document.createElement('img'); | |
console.time('clone'); | |
for(var i=0 ; i<100000 ; i++) | |
elmImage.cloneNode(false); | |
console.timeEnd('clone'); | |
console.time('img'); | |
for(var i=0 ; i<100000 ; i++) | |
document.createElement('img'); | |
console.timeEnd('img'); |
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@namespace url(http://www.w3.org/1999/xhtml); | |
@-moz-document domain("twitter.com") { | |
div[data-component-term="user_recommendations"], | |
div[data-component-term="trends"], | |
div[data-component-term="footer"], | |
.fullname{ | |
display: none !important; | |
} | |