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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
</style>
<script language="javascript">
window.onload=function()
{
var oText=document.getElementById('text');
oText.onkeyup=function()
{
this.value=commafy(this.value);
}
}
function commafy(value)
{
var tmp=value.replace(/[,]/g,'').split('').reverse().join('');
alert(tmp);
tmp=tmp.replace(/(\d{3})(?=\d)/g,'$1,');
return tmp.split('').reverse().join('');
}
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</head>
<body>
<input type="text" id="text" />
</body>
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<script>
var test = "1232356788800001";
var i = test.length%3 > 0 ? Math.floor((test.length/3)) : (test.length/3)-1;
var a = test.split("");
for (var x = 1; x<i+1; x++) {
a.splice(-3*x-x+1, 0, ",");
};
alert(a.join(""));
</script>