Jim W Jim W - 6 months ago 17
Javascript Question

Upload A File To Server Using AJAX

I am trying to use the approach from here to perform AJAX file upload but have no luck to get it done. I added a couple of alerts to debug and couldn't reach the 2nd break point on the following code:



$.validate({
form: '#frmSlide',
modules: 'file, html5',
validateOnBlur: false,
errorMessagePosition: 'top', // Instead of 'element' which is default
scrollToTopOnError: false, // Set this property to true if you have a long form
onSuccess: function($form) {
alert('1');
var file_data = $('#frmSlide').prop('files')[0];
alert('2');
var form_data = new FormData();
alert('3');
form_data.append('file', file_data);
$.ajax({
url: 'upload.php', // point to server-side PHP script
dataType: 'text', // what to expect back from the PHP script, if anything
cache: false,
contentType: false,
processData: false,
data: form_data,
type: 'post',
success: function(php_script_response) {
alert(php_script_response); // display response from the PHP script, if any
}
});
}
});

<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post" enctype="multipart/form-data" class="form-horizontal" id="frmSlide">

<div class="form-group">
<label class="col-sm-4 control-label" for="imgfile">Image file</label>
<div class="col-sm-8">
<input type="file" id="imgfile" data-validation="required ratio mime size" data-validation-allowing="jpg, png, gif" />
</div>
</div>
<div class="form-group">
<div class="col-sm-8 col-md-offset-4" id="image-holder">
</div>
</div>
<div class="form-group">
<label class="col-sm-4 control-label" for="seq">Sequence</label>
<div class="col-sm-8">
<input class="form-control server" name="f_seq" id="f_seq" data-validation="number" data-validation-allowing="range[1;4]" type="text" value="" placeholder="Enter 1-4" />
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-4 col-sm-8">
<button name="btnUpd" id="btnUpd" type="submit" class="clsUpd btn btn-primary"><i class="fa fa-floppy-o"></i>&nbsp;Update</button>
</div>
</div>

</form>





Can anyone point me out what I did wrong? Thanks.

Answer

use $('#imgfile').prop instead of $('#frmSlide').prop

var file_data = $('#imgfile').prop('files')[0];