Preview an image before it is uploaded
<script type = "text/javascript" > function readURL ( input ) { if ( input . files && input . files [ 0 ]) { var reader = new FileReader (); reader . onload = function ( e ) { $ ( '#blah' ). attr ( 'src' , e . target . result ); } reader . readAsDataURL ( input . files [ 0 ]); } } </script> and the associated HTML: <body> <form id = "form1" runat = "server" > <input type = 'file' onchange = " readURL ( this ); " /> ...