ÓÃJavaScriptдµÄСʱºòÍæµÄƹÅÒÇòСÓÎÏ·
ÓÉÓÚ»ðºüä¯ÀÀÆ÷²»Ö§³Ö“removeNode”º¯Êý£¬ËùÒÔһϴúÂëÖ»Ö§³ÖIE.
<!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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Repaints and Reflows ÖØ»æºÍÖØÅŰæ
Once the browser has downloaded all the components of a page—HTML markup, JavaScript, CSS, images—it parses through the files and creates two internal data structures:
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The overall structure of your code is one of the main determinants as to how fast it will execute. Having a very small amount of code doesn't necessarily mean that it will run quickly, and having a large amount of code ......
µÚÎåÕ Strings and Regular Expressions ×Ö·û´®ºÍÕýÔò±í´ïʽ
Practically all JavaScript programs are intimately tied to strings. For example, many applications use Ajax to fetch strings from a server, convert those strings into more easily usable JavaScript objects, and ......