MZhou zmmbreeze

SpiderMonkey:

> 0++;
SyntaxError: invalid increment operand

V8:

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	function retry(isDone, next) {
	var current_trial = 0, max_retry = 50, interval = 10, is_timeout = false;
	var id = window.setInterval(
	function() {
	if (isDone()) {
	window.clearInterval(id);
	next(is_timeout);
	}
	if (current_trial++ > max_retry) {
	window.clearInterval(id);

	<!doctype html>
	<html>
	<head>
	<meta name="viewport" content="width=device-width">
	<title>CSS animations</title>
	<style>
	.spin {
	-webkit-animation: 3s rotate linear infinite;
	animation: 3s rotate linear infinite;
	background: red;

	<!DOCTYPE html>

	<meta charset=utf-8 />
	<title>Defining JavaScript functions, the ES6 way</title>

	<h1>Defining JavaScript functions, the ES6 way</h1>

	<em>Use Firefox 22 (Firefox Nightly)</em>

	<script>

	body {
	width: 600px;
	font:normal 14px/1.62 arial, sans-serif;
	}
	.mod {
	margin-bottom:100px;
	background-color:#efc;
	}
	.pic {
	margin-right: 20px;

	.example{
	position: relative;
	margin: 15px 0 15px 20px;
	padding: 39px 19px 14px;
	background-color: white;
	border: 1px solid #DDD;
	-webkit-border-radius: 4px;
	-moz-border-radius: 4px;
	border-radius: 4px;
	}

	var util = {};

	/* now: we use this one */
	util.first = function(element) {
	if(!element) return;
	return element[element.firstElementChild ? 'firstElementChild' : 'firstChild'];
	}

	/* former: */
	util.first = function(element) {

	* {
	/* makes border and padding grow inward from width & height
	- mix-and-match units for various box model properties
	- ex. width: 25%; padding: 15px;
	- no workie in IE7
	*/
	-moz-box-sizing: border-box;
	box-sizing: border-box;

	/* hiding overflow creates a block formatting context

	<!doctype html>
	<html>
	<head>
	<title>iFrame memory leak prevention test</title>
	</head>
	<body>
	<h1>iFrame memory leak prevention test (void)</h1>

	<p>In IE up through version 8 adding an iframe to a page and
	removing it produces a memory leak in some cases. The pattern