禁止输入非金额数字

iteye_4473

于 2013-04-01 11:41:09 发布

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分类专栏： javascript 文章标签： javascript ViewUI

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<html>

<head>

<title>禁止输入非金额数字</title>

<script type="text/javascript">

function CheckInputInt(oInput) {
   var obj = oInput.value;
   var length = obj.length;
   var objStart = obj.substr(0,1);
   var objSub = obj.substr(1,1);
   var objVal = obj.substr(1,length);
   if ('' != objStart.replace(/\d/g,''))
   {
      if(objStart != '-'){
        objStart = objStart.replace(/\D/g,'');
      }else{
           if(objSub == '0'){
             objVal = '';
           }
      }
   }
   if ('' != objVal.replace(/\d/g,'')){

          objVal = objVal.replace(/\D/g,'');
    }else{
       if(objStart == 0)
              objVal = '';
    }
   oInput.value = objStart+objVal;
}

</script>

</head>

<body>

禁止输入非金额数字<input type="text" name="num" οnkeyup="CheckInputInt(this);" οnblur="CheckInputInt(this);" onafterpaste="CheckInputInt(this);" />

</body>

</html>