js中的异常和参数
<html><head>
<title>a</title>
<script type="text/javascript">
function sum(){
var result = 0;
for(var i = 0, len = arguments.length; i < len; i++){
var current = arguments;
if(isNaN(current)){
throw new Error("not a number exception");
}else{
result += current;
}
}
return result;
}
alert(sum(10,20,30,40,50));
</script>
</head>
<body>
</body>
</html>
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