js文件格式校验

2015/07/28 58604

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<html>
  
  <head>
   <title>js校验文件格式</title>
   <meta http-equiv='content-type' content='text/html;charset=utf-8'>
   <script type="text/javascript" src="jquery-1.4.3.js"></script>
   <script type="text/javascript">
   
     function get(){
      var s = $("#file1").val();
      var fl = s.split(".");
   //常用的文件格式
      var ary = ["doc","docx","xls","xlsx","ppt","gif","jpeg","jpg","png","txt","wps","pdf"];
       
      //文件格式在数组中返回下标，否则返回 -1
     var t= $.inArray(fl[1],ary);
     
     return t==-1;
    
     }
    
   </script>
  </head>
  <body>
  
    <input type="file" id="file1"  >
    <input type="button" onclick="get();" value="文件格式">
  </body>
 
</html>