Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaScriptÏÔʾʱ¼ä

Õâ¸öÎÊÌâºÜ¼òµ¥£¬Ö÷ÒªÓÐÏÂÃæ¼¸¸ö֪ʶµã£º
£¨1£©       È¡µÃʱ¼ä£ºvar d=new Date();var time=d.toLocaleString()
£¨2£©       ÏÔʾÔÚÍøÒ³ÉÏ£¬¼ÙÉèдÔÚÒ»¸ö<span>ÖУ¬ÇÒ¸Ã<span>µÄidΪshowTime:
document.getElementById("showTime").innerHTML=time; 
£¨3£©       ÿ¼ä¸ôÒ»ÃëÏÔʾһ´Î£ºsetInterval('showTime()',1000)//¸Ãº¯Êý±íÃ÷£¬Ã¿¸ôÒ»ÃëÖÓµ÷Óú¯ÊýshowTime()Ò»´Î¡£
¾ßÌå´úÂëÈçÏ£º
 
<html>
<head>
<title></title>
</head>
 
<script language="javascript">
function showTime(){
    var d=new Date();
    var time=d.toLocaleString()
    document.getElementById("showTime").innerHTML=time; 
}
</script>
 
<body onload="setInterval('showTime()',1000)">
<span id="showTime"></span>
</body>
</html>


Ïà¹ØÎĵµ£º

javascriptµÄwindows.open²ÎÊýѧϰ


<SCRIPT LANGUAGE="javascript">
<!--
window.open ('page.html', 'newwindow', 'height=100, width=400, top=0,left=0, toolbar=no, menubar=no, scrollbars=no, resizable=no,location=no, status=no')
file://д/³ÉÒ»ÐÐ
-->
</SCRIPT>
²ÎÊý½âÊÍ£º
<SCRIPT LANGUAGE="javascript"&g ......

javaScript »ñµÃ´¥·¢Ê¼þµÄÔªËØ Ö§³ÖIE FireFox

<html>
<head>
<mce:script type="text/javascript"><!--
function myclick(event){
var ev =event.srcElement ? event.srcElement : event.target;
}

// --></mce:script>
......

JavaScriptµÄʼþ´úÀí

Èç¹ûÄãÏë½øÒ»²½Á˽âÈçºÎÓÃJavaScriptÀ´ÎªÍøÒ³Ìí¼Ó½»»¥ÐԵϰ£¬ÄãÒ²ÐíÒѾ­Ìý¹ýJavaScriptµÄʼþ´úÀí£¨event delegation£©ÁË£¬²¢ÇÒ»á¾õµÃÖ»ÓÐÄÇЩţ±ÆºæºæµÄJavaScript³ÌÐòÔ±²Å»á¹ØÐÄÕâÑù¸´ÔÓµÄÉè¼ÆÄ£Ê½¡£ÊÂʵÉÏ£¬Èç¹ûÄãÒѾ­ÖªµÀÔõôÑùÈ¥Ìí¼ÓJavaScriptµÄʼþ´¦ÀíÆ÷£¨event handler£©£¬ÊµÏÖʼþ´úÀíÒ²ÊǼþÇá¶øÒ×¾ÙµÄÊÂÇé¡£
J ......

Javascript±Õ°ü£¨Closure£©


±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 ......

ÈçºÎ±ÜÃâJavascriptʼþ°ó¶¨³öÏÖÄÚ´æÐ¹Â©

"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 ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ