¹ØÓÚjavascriptСÊýµÄËÄÉáÎåÈë
ÓÃJavascriptÈ¡floatÐÍСÊýµãºóÁ½Î»£¬Àý22.127456È¡³É22.13,ÈçºÎ×ö£¿
1. ×µÄ°ì·¨....... [ÎÒ¾ÍÔõô¸ÉµÄ.........]
function get()
{
var s = 22.127456 + "";
var str = s.substring(0,s.indexOf(".") + 3);
alert(str);
}
2. ÕýÔò±í´ïʽЧ¹û²»´í
<script type="text/javascript">
onload = function(){
var a = "23.456322";
var aNew;
var re = /([0-9]+\.[0-9]{2})[0-9]*/;
aNew = a.replace(re,"$1");
alert(aNew);
}
</script>
3. Ëû¾Í±È½Ï´ÏÃ÷ÁË.....
<script>
var num=22.127456;
alert( Math.round(num*100)/100);
</script>
4.»áÓÃÐÂÏʶ«Î÷µÄÅóÓÑ....... µ«ÊÇÐèÒª IE5.5+²ÅÖ§³Ö¡£
<script>
var num=22.127456;
alert( num.toFixed(2));
</script>
Ïà¹ØÎĵµ£º
ÏÖ½«´úÂëÌù³ö£¬¹²Ã㣡
HTML²¿·Ö£º=====================================================
<html>
<head>
<script language="VBscript">
<!--
function M_b()
set M_e=Scene.Engine
M_e.Nodes("MyScript").Fields("nodestring")="Shape {geometry Box{}}"
M_e.Nodes ......
1. oncontextmenu="window.event.returnValue=false" ½«³¹µ×ÆÁ±ÎÊó±êÓÒ¼ü
<table border oncontextmenu=return(false)> <td>no </table> ¿ÉÓÃÓÚTable
2. <body onselectstart="return false"> È¡Ïûѡȡ¡¢·ÀÖ¹¸´ÖÆ
3. onpaste="return false" ²»×¼Õ³Ìù
4. oncopy="return false;" onc ......
1¡¢Êý×éµÄ´´½¨
var arrayObj = new Array();¡¡//´´½¨Ò»¸öÊý×é
var arrayObj = new Array([size]);¡¡//´´½¨Ò»¸öÊý×é²¢Ö¸¶¨³¤¶È£¬×¢Òâ²»ÊÇÉÏÏÞ£¬Êdz¤¶È
var arrayObj = new Array([element0[, element1[, ...[, elementN]]]]);¡¡´´½¨Ò»¸öÊý×é²¢¸³Öµ
Ҫ˵Ã÷µÄÊÇ£¬ËäÈ»µÚ¶þÖÖ·½·¨´´½¨Êý×éÖ¸¶¨Á˳¤¶È£¬µ«Êµ¼ÊÉÏËùÓ ......
»ÆÉ«²¿·ÖΪdate.js
<script type="text/javascript" src="/js/date.js"></script>
<input name="date" type="text" id="date" onBlur="checkDay(this)" style="width:160px;" /><INPUT class="button" style="WIDTH: 64px; HEIGHT: 24px" onClick="setday(this,date)"type="button" value="Ñ¡ÔñÈÕÆÚ ......