判断字符串重复个数 

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <script>
  window.onload=function(){
    var str ='2jJJJhJcus262i,jdh1'
    var reg=new RegExp('j','g')
    var arr=str.match(reg)
    console.log(arr)
    console.log(arr.length)
  }
  </script>
</head>
<body>

</body>
</html>

 

posted @ 2015-05-06 10:05  高尔础础  阅读(255)  评论(0)    收藏  举报