Question

下面是html页面底部的html页面和脚本。

正则表达式似乎不起作用。

 <!DOCTYPE html>
  <html>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>

<div ng-app="">

<p>Input something in the input box:</p>
<p>Name : <input type="text" ng-model="name" placeholder="Enter name here">  </p>
 <h1>Hello {{name}}</h1>

</div>

 </body>
 <script>

  //below is the format obtained from the db
  var format="##,##,###";
   var reverseFormat=Array.from(format).reverse().join('');
   var reverseFormatLength=reverseFormat.length;
   //below are various separator
   var firstseparator=null;
    var restSeparator=null;
   var firstSeparatorIndicator=0;
    var indicesForVariousSeparators=[];

    var number='123456524578';
    x=number.toString();
     var stringToGoIntoTheRegex=2;

     var regex = new RegExp("\B(?=(\d{"+ stringToGoIntoTheRegex+"})+(?!\d))" , "g");

      var lastThree = x.substring(x.length-4);
      var otherNumbers = x.substring(0,x.length-4);
       if(otherNumbers != '')
       lastThree = ',' + lastThree;


    var res = otherNumbers.replace(regex, ",") + lastThree;

     alert(res);

      </script>

      </html>

在上面的代码中，我正在使用

 var stringToGoIntoTheRegex=2;

 var regex = new RegExp("\B(?=(\d{"+ stringToGoIntoTheRegex+"})+(?!\d))" , "g");

但这似乎不起作用。

输出应该是：1,23,45,65,24,578

每一次帮助都是宝贵的。

javascript中的regExp不适用于我

0 个答案: