javascript函数
转载至:http://hi.baidu.com/gradyszl/blog/item/7761bee8e188d437b90e2d62.html//javascript格式化数字，如 8888.85745 格式化成 8,888.86<html>
<head>
<title> New Document </title>
</head>
<body>
<script language="JavaScript">
<!--
//lael 2005-11-09
function formatnumber(fnumber,fdivide,fpoint,fround){
var fnum = fnumber + '';
var revalue="";
if(fnum==null){
for(var i=0;i<fpoint;i++)revalue+="0";
return "0."+revalue;
}
fnum = fnum.replace(/^\s*|\s*$/g,'');
if(fnum==""){
for(var i=0;i<fpoint;i++)revalue+="0";
return "0."+revalue;
}
fnum=fnum.replace(/,/g,"");
if(fround){
var temp = "0.";
for(var i=0;i<fpoint;i++)temp+="0";
temp += "5";
fnum = Number(fnum) + Number(temp);
fnum += '';
}
var arrayf=fnum.split(".");
if(fdivide){
if(arrayf.length>3){
while(arrayf.length>3){
revalue=","+arrayf.substring(arrayf.length-3,arrayf.length)+revalue;
arrayf=arrayf.substring(0,arrayf.length-3);
}
}
}
revalue=arrayf+revalue;
if(arrayf.length==2&&fpoint!=0){
arrayf=arrayf.substring(0,(arrayf.length<=fpoint)?arrayf.length:fpoint);
if(arrayf.length<fpoint)
for(var i=0;i<fpoint-arrayf.length;i++)arrayf+="0";
revalue+="."+arrayf;
}else if(arrayf.length==1&&fpoint!=0){
revalue+=".";
for(var i=0;i<fpoint;i++)revalue+="0";
}
return revalue;
}
//-->
</script>
<input name="text1" type="text" value=""/>
</body>
</html>
//日期比较
function datecompare(date1, date2){
var d1 = new Date(date1.replace(/\-/g, "\/"));
var d2 = new Date(date2.replace(/\-/g, "\/"));
var flag = true;
if(isNaN(d1) || isNaN(d2))flag = false;//不是日期
if(flag &&
d1.getFullYear() > d2.getFullYear()){
flag = false;
}
if(flag &&
d1.getFullYear() == d2.getFullYear() &&
d1.getMonth() > d2.getMonth()){
flag = false;
}
if(flag &&
d1.getFullYear() == d2.getFullYear() &&
d1.getMonth() == d2.getMonth() &&
d1.getDate() > d2.getDate()){
flag = false;
}
return flag;
}
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