javascript»ñµÃÊó±êµÄ¾ø¶ÔλÖÃ
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<body onmouseMove="getXY(event)">
<script language="JavaScript">
<!--
function mouseX(evt) {
if (evt.pageX) return evt.pageX;
else if (evt.clientX)
return evt.clientX + (document.documentElement.scrollLeft ?
document.documentElement.scrollLeft :
document.body.scrollLeft);
else return null;
}
function mouseY(evt) {
if (evt.pageY) return evt.pageY;
else if (evt.clientY)
return evt.clientY + (document.documentElement.scrollTop ?
document.documentElement.scrollTop :
document.body.scrollTop);
else return null;
}
function getXY(event)
{
var e = event || window.event;
var x = mouseX(e);
var y = mouseY(e);
document.getElementById("XY").innerHTML = "X:" + x + "<br />Y:" + y;
}
function getX(elementID)
{
var el = elementID
return el.offsetLeft
}
function getY(elementID)
{
var el = elementID
return el.offsetTop
}
function getElementPositionX(elemID)
{
var offsetTrail = document.getElementById(elemID);
var offsetLeft = 0;
while(offsetTrail)
{
offsetLeft += offsetTrail.offsetLeft;
Ïà¹ØÎĵµ£º
1.²»¹ýÎÒ½ÌÄãÒ»¸öѧ×öÍøÒ³µÄ¼¼ÇÉ
ÿ¿´µ½Ò»¸öƯÁÁµÄÍøÒ³¾Í²é¿´Ï´úÂë
2.¿´ÕÅТÏéµÄÊÓÆµ
3¡£´Ó»ù´¡Ñ§Æð¡£È»ºóѧЩ»ù±¾µÄWEB¿ª·¢Ó¦ÓÃ
ÍÆ¼öÒ»¸öÍøÕ¾http://www.ccscript.cn/
¸ÃÕ¾Ïêϸ·ÖÀàJSµÄ»ù´¡,¶ÔÏó,¼«ÆäÓ¦Óã»
¸ÃÕ¾ÓжàÖÖµ±½ñÁ÷ÐеÄJS¿ò¼Ü£»
Õ¾ÄÚÖ÷´òJquery¿ò¼ÜµÄ»ù´¡¼°Ó¦Óã»
°üÀ¨ÌØÐ§´úÂëºÍÕ¹Ê¾ÌØÐ§£» ......
±Õ°ü£¨closure£©ÊÇJavascriptÓïÑÔµÄÒ»¸öÄѵ㣬ҲÊÇËüµÄÌØÉ«£¬ºÜ¶à¸ß¼¶Ó¦Óö¼ÒªÒÀ¿¿±Õ°üʵÏÖ¡£
ÏÂÃæ¾ÍÊÇÎÒµÄѧϰ±Ê¼Ç£¬¶ÔÓÚJavascript³õѧÕßÓ¦¸ÃÊǺÜÓÐÓõġ£
Ò»¡¢±äÁ¿µÄ×÷ÓÃÓò
ÒªÀí½â±Õ°ü£¬Ê×ÏȱØÐëÀí½âJavascriptÌØÊâµÄ±äÁ¿×÷ÓÃÓò¡£
±äÁ¿µÄ×÷ÓÃÓòÎ޷ǾÍÊÇÁ½ÖÖ£ºÈ«¾Ö±äÁ¿ºÍ¾Ö²¿±äÁ¿¡£
JavascriptÓïÑÔµÄÌØÊâÖ®´¦£¬¾ÍÔ ......
"These memory leaks often
occur as a result of circular references between JavaScript objects and
objects within IE’s DOM (document object model)."
GPDE Team Blog
Ã÷ÏÔµÄDOM¶ÔÏóÓë JavaScript¶ÔÏóÑ»·ÒýÓúܺÃÅжϣ¬ÄѵÄÊÇÒþº¬µÄÑ»·ÒýÓÃÅжϣ¡
Òþº¬µÄÑ»·ÒýÓÃÐèҪͨ¹ý×÷ÓÃÓòÁ´½øÐзÖÎöÅÐ ......
function getInfo()
{
var s = "";
s += " ÍøÒ³¿É¼ûÇøÓò¿í£º"+ document.body.clientWidth+"\n";
s += " ÍøÒ³¿É¼ûÇøÓò¸ß£º"+ document.body.clientHeight+"\n";
s += " ÍøÒ³¿É¼ ......
1. ÍøÒ³Öв¶»ñJavaScript´íÎóµÄÁ½ÖÖ·½·¨£º
ʹÓà onerror ʼþÊÇÒ»ÖÖÀÏʽµÄ±ê×¼µÄÔÚÍøÒ³Öв¶»ñ Javascript ´íÎóµÄ·½·¨
throw ÉùÃ÷µÄ×÷ÓÃÊÇ´´½¨ exception£¨Òì³££©¡£Äã¿ÉÒÔ°ÑÕâ¸öÉùÃ÷Óë try...catch ÉùÃ÷ÅäºÏʹÓã¬ÒÔ´ïµ½¿ØÖƳÌÐòÁ÷²¢²úÉú¾«È·´íÎóÏûÏ¢µÄÄ¿µÄ¡£
2.Á½¸öJavaScriptÎļþ¼äº¯ÊýµÄµ÷ÓÃ
http://space.flash8.net ......