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

Javascript ȡСÊýµãºóÃæNλ

ÓÃJavascriptÈ¡floatÐÍСÊýµãºóÁ½Î»£¬Àý22.127456È¡³É22.13,ÈçºÎ×ö£¿
1. ×µÄ°ì·¨....... [ÎÒ¾ÍÔõô¸ÉµÄ.........]
1function get()
2{
3    var s = 22.127456 + "";
4    var str = s.substring(0,s.indexOf(".") + 3);
5    alert(str);
6} 
2. ÕýÔò±í´ïʽЧ¹û²»´í
 
1<script type="text/javascript">
2onload = function(){
3    var a = "23.456322";
4    var aNew;
5    var re = /([0-9]+\.[0-9]{2})[0-9]*/;
6    aNew = a.replace(re,"$1");
7    alert(aNew);
8}
9</script>
3. Ëû¾Í±È½Ï´ÏÃ÷ÁË.....
1<script>
2var num=22.127456;
3alert( Math.round(num*100)/100);
4</script> 
4.»áÓÃÐÂÏʶ«Î÷µÄÅóÓÑ....... µ«ÊÇÐèÒª IE5.5+²ÅÖ§³Ö¡£
 
1 <script>
2var num=22.127456;
3alert( num.toFixed(2));
4</script>


Ïà¹ØÎĵµ£º

¡¾×ª¡¿Javascriptº¯ÊýÖд«µÝ´ø¿Õ¸ñµÄ²ÎÊý

Javascriptº¯ÊýÖд«µÝ´ø¿Õ¸ñµÄ²ÎÊý
       ͨ³£ÔÚÒ³ÃæÖÐÒªÈÃijЩÄÚÈݵã»÷ºó²úÉúµã»÷ʼþ£¨·ÇÒ³ÃæÌø×ª£©¶¼»áʹÓÃonclick£¬µ«ÊÇÕâÑù²»ÊÊÓÚÐèÒª´«µÝ²ÎÊýµÄÇé¿ö£¬ÓÚÊÇд³ÉÖ±½Óµ÷ÓÃJavascriptº¯ÊýµÄ·½Ê½£º<a href=javascript:somefunction(args)>content</a>¡£×¢Ò⣬ÕâôдÊÇÓÐÎÊÌâµ ......

JavascriptʵÏÖhtml¿éÓï·¨¸ßÁÁ£¨ËÑË÷ºó¹Ø¼ü×Ö¸ßÁÁ£©

dp.SyntaxHighlighter
dp.SyntaxHighlighter£¬Õâ¶«Î÷yahoo¶¼ÔÚÓÃËü£¬Ö§³Ö¶àÖÖÓïÑÔ¡£
Ö»ÐèÒª½«´úÂë·Åµ½<textarea>±êÇ©ÄÚ£¬Ëü¾Í¿ÉÒÔ×Ô¶¯¸ù¾ÝclassÖ¸¶¨µÄÓïÑÔÀ´¶ÔtextareaÄÚÈݽøÐÐ×ÅÉ«£¬»¹ÌṩÁËÐкš¢´òÓ¡µÈ¹¦ÄÜ¡£È磺
Xml´úÂë
<TEXTAREA class=java name=code><br/>    // code here ......

javascriptÔÚalert֮ǰתÒåµ¥ÒýºÅ

¶ÔÓÚ1¸öµ¥ÒýºÅ£¬ÔòתÒå¸Ãµ¥ÒýºÅ
¶ÔÓÚ1¸ö·´Ð±¸Ü¸ú1¸öµ¥ÒýºÅ£¬Ôò²»¹ÜËü¡£
¶ÔÓÚ2¸ö¼°ÒÔÉϵķ´Ð±¸Ü¼ÓÒ»¸öµ¥ÒýºÅ£¬Ôò·Ö±ð¶Ôÿ¸ö·´Ð±¸ÜºÍµ¥ÒýºÅ¶¼½øÐÐתÒ壬¼´ ʹ·´Ð±¸ÜÊýÄ¿±£³Ö²»±ä£¬ ²¢×ªÒåµ¥ÒýºÅ¡£
 

/// <summary>
/// ¶ÔÓÚµ¥ÒýºÅ¶øÑÔ£¬ÈôÇ°ÃæÓÐżÊý¸ö·´Ð±¸ÜÔòÒì³££¬ÆæÊý¸ö·´Ð±¸ÜÔòÕý³£
/// < ......

¡¶Îò͸JavaScript¡·Ö® ¸Ê¶ģÐÍ£¨Ð£©


ÔÚÉÏÃæµÄʾÀýÖУ¬ÎÒÃǶ¨ÒåÁËÁ½¸öÓï·¨¸Ê¶£¬Ò»¸öÊÇClass()º¯Êý£¬Ò»¸öÊÇNew()º¯Êý¡£Ê¹ÓÃClass()¸Ê¶£¬ÎÒÃÇÒѾ­¿ÉÒÔÓ÷dz£ÓÅÑŵĸñʽ¶¨ÒåÒ»¸öÀà¡£ÀýÈçǰÀýÖеģº
    
var
 Employee 
=
 Class(Person,    
//
ÅÉÉúÖÁPersonÀà
    
{ ......

javascript Ìá½»¼ÓÃÜ

Ìṩһ¸ö¼òµ¥µÄÀý×Ó£º
 <HTML>
 <HEAD>
  <TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Key ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ