js prompt函数使用例子

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script>
var  num； 

var theResponse = window.prompt("移动车辆至新的会员名下，请输入会员memNo号: ","");
if(theResponse == null || theResponse == "" || isNaN(theResponse)){ 
    alert(\'num为空，不是数字\'); 
}else{
    alert("theResponse$$:" + theResponse);
}
</script>
</head>
<body>
</body>
</html>

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