javascript - jquery upload and view image -


i found jquery script lets preview image before upload it.

<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="x-ua-compatible" content="ie=edge,chrome=1">  <script src="http://code.jquery.com/jquery-1.9.1.js"></script> <script>  function readurl(input) {         if (input.files && input.files[0]) {             var reader = new filereader();                         reader.onload = function (e) {                 $('#target').attr('src', e.target.result);             }              reader.readasdataurl(input.files[0]);         }     }      $("#imginp").change(function(){         readurl(this);     }); </script> </head> <body>  <h1>jquery uploads</h1>      <form id="form1" runat="server">         <input type="file" id="imginp" />         <img id="target" src="#" alt="your image" />     </form>  </body> </html>

i found on jsfiddle , works fine. try run on server , doesn't work. can't seem figure out why not working. have ideas?

i couple different things happening here. first guess there timing issue of when javascript loading. try throwing jquery listener "ready" call. 

function readurl(input) {     if (input.files && input.files[0]) {         var reader = new filereader();                     reader.onload = function (e) {             $('#target').attr('src', e.target.result);         }          reader.readasdataurl(input.files[0]);     } } $(function(){     $("#imginp").change(function(){         readurl(this);     }); })

also - make sure protocol (http vs https) matching pull code.jquery.com


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