Multiple File Upload Using jQuery

/*
* jQuery File Upload Plugin JS Example 5.0.2
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2010, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://creativecommons.org/licenses/MIT/
*/

/*jslint nomen: true */
/*global $ */

$(function() {
    'use strict';

    // Initialize the jQuery File Upload widget:
    $('#fileupload').fileupload();

    // Load existing files:
    $.getJSON($('#fileupload form').prop('action'), function(files) {
        var fu = $('#fileupload').data('fileupload');
        fu._adjustMaxNumberOfFiles(-files.length);
        fu._renderDownload(files)       
            .appendTo($('#fileupload .files'))
            .fadeIn(function() {
                // Fix for IE7 and lower:
                $(this).show();
            });
    });

    // Open download dialogs via iframes,
    // to prevent aborting current uploads:
    $('#fileupload .files a:not([target^=_blank])').live('click', function(e) {
        e.preventDefault();
        $('<iframe style="display:none;"></iframe>')
            .prop('src', this.href)
            .appendTo('body');
    });

});

Uncaught TypeError: Object #<Object> has no method 'fileupload' application.js:19
(anonymous function) application.js:19
e.resolveWith jquery.min.js:16
e.extend.ready jquery.min.js:16
c.addEventListener.z

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