file extension validation in jQuery

Hello Friends,

Recently one of my project require file extension validation. I am using jquery to achive this. So, i have done it in simple way with jquery as follow

$(function ()
   $('#btnSubmit').click(function ()
      var ext = ['jpeg', 'jpg', 'png', 'gif'];
      var file = $("file").val();
      if ($.inArray(file.split('.').pop().toLowerCase(), ext) == -1)
          alert ('Only jpg, png and gif are allowed.');

Include HTML as follow.

It is work with jQuery js. So, include jQuery js file. Hope it will help someone!!!!

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