jquery for clearing the file upload control

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heyy..

I am using a jquery for validation of images ..My problem when alert msg is came and click OK button ..the fileupload is not cleared(in IE) ..But in mozila it cleared..here is my code.

XML

<script type="text/javascript">
    $(function() {
        $('#<%=fluPhoto.ClientID %>').change(
    function() {
        var a = $('#<%=fluPhoto.ClientID %>').val();
        //alert(a);
        var fileExtension = ['jpeg', 'jpg', 'png', 'gif', 'bmp'];
        if ($.inArray($(this).val().split('.').pop().toLowerCase(), fileExtension) == -1) {
            $("input[attr-identity=fluPhoto]").val('');
            MessageBox("Only .jpeg, .jpg, .png, .gif, .bmp formats are allowed.", $('#<%=fluPhoto.ClientID %>'));


        }


    })
    })



</script>

can I get solution for clear the file upload(fluPhoto) after the validation occure..

Posted 22-Apr-13 21:14pm

aravindnass

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I.explore.code 23-Apr-13 6:19am

Not sure about this, but can you try this: $("input[attr-identity=fluPhoto]").attr('value', '');

2 solutions

Solution 1

The file upload control is programmatically read-only in IE, for security purposes. The only option is to reset the whole form.

The best solution I found is explained here:
http://stackoverflow.com/questions/1043957/clearing-input-type-file-using-jquery[^]
See slipheed's solution, which is to temporarily wrap the control in its own form to reset it, then remove the wrapper.

Posted 23-Apr-13 2:20am

Brian A Stephens

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Prasad Khandekar · Accepted Answer · 2013-04-23T02:58:00

Hello,

File Upload element is a protected element in most of the browsers and browser's will not allow Javascript to alter the value of this element[^].

However you can delete this element on the fly and re-create the same with exact same attributes of the deleted element and append it in the DOM, this way it will clear the value of this element. below code snippet shows how this canbe done.

HTML

lt;head>

<script type="text/javascript">
function clearForm(ctrlId) {
   var old = document.getElementById(ctrlId);
   var newElm = document.createElement('input');
   newElm.type = "file";
   newElm.id = ctrlId;
   newElm.name = old.name;
   newElm.className = old.className;
   // Put code to copy other attributes as well
   old.parentNode.replaceChild(newElm, old);
}
</script>
</head>
<body>
<h1>My First Heading</h1>
<p>My first paragraph.</p>
<form id="frmMain">
    <div id="fuDiv">
         <input type="file" id="fluPhoto"/><br/>
    </div>
    <a href="#" onclick="clearForm('fluPhoto')">Clear</a>
</form>
</body>
</html>

Regards,