只要把结果格式化就OK了~~<SCRIPT Language="JavaScript">
<!--//
var i=9999;
var str;
str="0000"+i;
alert(str.substring(str.length-5));
//-->
</SCRIPT>
<!--//
var i=9999;
var str;
str="0000"+i;
alert(str.substring(str.length-5));
//-->
</SCRIPT>
a = 2345;
if(a.toString().length<5) {
a = a + 100000;
a = a.toString().substring(1,a.toString().length);
alert(a);
}
</script>
var i=9999;
alert(("00000"+i).substr(0,5));
</SCRIPT>