js验证输入的金钱格式

<html>
<head>
<title>js验证输入的金钱格式</title>
<script type="text/javascript">
    function moneyCheck(){
        var isNum = /^\d+(\.\d+)?$/;
        var money = document.getElementById("money").value;
        if(!isNum.test(money)){
            alert("请输入正确的金钱");
            return;
        }else{
            alert("输入正确");
        }
    }
  </script>
</head>

<body>
  <input >
　　<button  onclick="moneyCheck();">验证</button>
 </body>
</html>

js验证输入的金钱格式

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