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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>--ƹÅÒÇò--</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<style>
.main{
width:690px;
margin:0 auto;
}
#box{
width:680px;
height:340px;
border:1px solid green;
position:relative;
}
.pingpang{
position:absolute;
width:10px;
height:10px;
background-color:red;
overflow:hidden;
}
.pingpangpai{
position:absolute;
width:60px;
height:10px;
background-color:black;
overflow:hidden;
}
#bigin{
margin:0 auto;
margin:10px;
padding:5px;
}
</style>
<script text="text/javascript" language="javascript">
var Px=0,Py=0;//ƹÅÒÊײ¿
var PPx,PPy;//ƹÅÒÅÄ
var Gox=10,Goy=10;
var end=false;//¹ý½ç
var isOver = false;//ÓÎÏ·½áÊø
var score = 0;//·ÖÊý
var isMove = 0;//ƹÅÒÅĿɷñÒÆ¶¯
function $(id){
return document.getElementById(id);
}
window.onload = function(){
Px = Math.round(Math.random()*33)*20;
createPingPang(Px,Py);
createPingPangPai(300,330);
AllDiv = $("box").all.tags("DIV");
AllSpan = $("box").all.tags("SPAN");
$("bigin").attachEvent('onclick',function(){
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Recursion Patterns µÝ¹éģʽ
When you run into a call stack size limit, your first step should be to identify any instances of recursion in the code. To that end, there are two recursive patterns to be aware of. The first is the straightforward recursive pattern represented ......
µÚ°ËÕ Programming Practices ±à³Ìʵ¼ù
Every programming language has pain points and inefficient patterns that develop over time. The appearance of these traits occurs as people migrate to the language and start pushing its boundaries. Since 2005, when the term "Ajax" ......
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Building and Deploying High-Performance JavaScript Applications
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According to a 2007 study by Yahoo!'s Exceptional Performance team, 40%–60% of Yahoo!'s users have an empty cache experience, and about 20% of all page views are done ......