<script type="text/javascript">
    var i = iResult = 0
    function sum()
    {
        for (var i = 0; i < arguments.length; i++)
        {
            iResult += arguments[i]
        }
        return iResult
    }
    //应用
    alert(sum(1,2,3,4,5,6,7,8,9,10)) //输出55
</script>