出现“未捕获的类型错误:未定义不是函数”控制台错误

我在加载时在第 156 行收到控制台错误 （ Uncaught TypeError: undefined is not a function），我一生都无法弄清楚。我已经提供了有问题的行，并在下面提供了完整的上下文。另外，我添加了站点链接，以防万一。我将不胜感激任何和所有的帮助/建议。

网站链接

这是有问题的行（156）： if (!$imgs.length) {return $.Deferred.resolve().promise();}

以下是完整代码：http://pastebin.com/Ext4TwdP#

//*********************************************************
// Let's start, shall we?
//*********************************************************
jQuery(document).ready(function($) {
//*********************************************************
// Global variables
//*********************************************************
    // Morphing icons
    var myIcons = new SVGMorpheus('#iconset', {
        duration: 250,
        rotation: 'none'
    });
//*********************************************************
// Turn off all Ajax caching (IE caches $.load)
//*********************************************************
    $.ajaxSetup({
        cache: false
    });
//*********************************************************
// Preloader
//*********************************************************
    window.addEventListener('DOMContentLoaded', function() {
        $('#projects-list, footer p').hide();
        new QueryLoader2(document.querySelector("body"), {
            barColor: "#f30",
            backgroundColor: "#000",
            barHeight: 1,
            minimumTime: 200,
            fadeOutTime: 0,
            onComplete: function() {
                $('.site-overlay').remove();
                $('#masthead').slideDown(100, function(){
                    $('#projects-list, footer p').show().addClass('fadeInUp');
                });
                // Set a timeout because 100ms is too quick
                $(function() {
                    setTimeout(function() {
                        $('#projects-list, footer p').removeClass('fadeInUp');
                    }, 500);
                });
            }
        });
    });
//*********************************************************
// Small features
//*********************************************************
    // Set top margin for #content to always match the height of the top header
    function resize() {
        var headerTop = $('#masthead').outerHeight();
        (headerTop != parseInt($('#content').css('margin-top').slice(0, -2))) ? $('#content').stop().animate({'margin-top': headerTop}, 150) : console.log('');
    }
    resize();
    window.onresize = resize;
    // Hide header when scrolling down and show header when scrolling up
    var lastScrollTop = 0;
    $(window).scroll(function(event){
       var st = $(this).scrollTop();
       if (st < lastScrollTop || st === 0){
           $('#masthead').removeClass('unpinned');
       } else {
          $('#masthead').addClass('unpinned');
       }
       lastScrollTop = st;
    });
//*********************************************************
// Project hovers
//*********************************************************
    $('#content').on('mouseenter', 'article.project', function(){
        // If loading icon doesn't exist in the DOM...
        if ( !$('.overlay').find('.loading-icon').length) {
            // And if the project wrapper is activated...
            if ( $(this).closest('#main').find('#project-wrapper').hasClass('activated') ) {
                $(this).addClass('hover');
            } else {
                $(this).addClass('hover grayscale grayscale-fade');
            }
        // If loading icon exists in the DOM...
        } else {
            $(this).find('.post-link').hide();
        }
        // Dirty fix for 1px white flicker on hover (Chrome)
        var overlayWidth = $('article.project').outerWidth();
        $('.overlay').css({
            marginLeft: -1,
            width: overlayWidth + 2
        });
    }).on('mouseleave', 'article.project', function(){
        // If #project-wrapper is activated...
        if ( $(this).closest('#main').find('#project-wrapper').hasClass('activated') ) {
            $(this).removeClass('hover');
            $(this).find('.post-link').show();
        // If #project-wrapper is not activated...
        } else {
            // If loading icon is present...
            if ( $(this).find('.loading-icon').length ) {
                // Only remove the 'hover' class
                $(this).removeClass('hover');
            // If loading icon is not present...
            } else {
                // Remove all classes
                $(this).removeClass('hover grayscale grayscale-fade');
                $(this).find('.post-link').show();
            }
        }
    });
    // Adjust the project titles so they always fit the container nicely
    function adjustTitle() {
        var thumbWidth = $('article.project > img').outerWidth();
        if (thumbWidth <= 220) {
            $('.overlay > h3').addClass('mobile');
        } else {
            $('.overlay > h3').removeClass('mobile');
        }
    }
    $(window).on('resize', adjustTitle);
//*********************************************************
// Projects
//*********************************************************
    (function($) {
        // Function to allow an event to fire after all images are loaded
        $.fn.imagesLoaded = function () {
            $imgs = this.find('img[src!=""]');
            // if there's no images, just return an already resolved promise
            if (!$imgs.length) {return $.Deferred.resolve().promise();}
            // for each image, add a deferred object to the array which resolves when the image is loaded
            var dfds = [];
            $imgs.each(function(){
                var dfd = $.Deferred();
                dfds.push(dfd);
                var img = new Image();
                img.onload = function(){dfd.resolve();}
                img.src = this.src;
            });
            // return a master promise object which will resolve when all the deferred objects have resolved
            // IE - when all the images are loaded
            return $.when.apply($,dfds);
        }
        // Function for additional styling
        function projectStyles() {
            // Check the first slide input
            $('#slider input:first').attr('checked', 'checked');
            $('#project-wrapper').addClass('activated');
            // Make the articles grey again after activation
            $('article.project').addClass('grayscale grayscale-fade').css('opacity', '0.4');
            // CSS effects
            $('.post-container').addClass('fadeInUp');
            $('.close-button').addClass('fadeInDown');
            // Remove pesky, sticky 'hover' class
            $('article.project').removeClass('hover');
        }
        // Open the project container
        function openProject() {
            var post_id = $(this).data('id'), // data-id attribute for .post-link
                ajaxURL = site.custom_ajax; // Ajax URL localized from functions.php
            // Add a loading icon
            $('<span class="loading-icon"></span>').insertBefore(this);
            // Add the 'active' class to make sure the div stays dark while loading
            $(this).closest('article.project').addClass('active');
            // Make all the articles grey when an article is clicked
            $('article.project').addClass('grayscale grayscale-fade').css('opacity', '0.4');
            // Remove the corner ribbon
            $('article').removeClass('current');
            $('.corner-ribbon').remove();
            // Get the response from the Ajax function
            $.ajax({
                type: 'POST',
                url: ajaxURL,
                context: this,
                data: {'action': 'load-content', post_id: post_id },
                success: function(response) {
                    // Add a corner ribbon to note the current activated project
                    $(this).closest('article.project').removeClass('active').addClass('current');
                    $('<div class="corner-ribbon">Current</div>').prependTo('article.current');
                    // Wait until all images are loaded
                    $('#project-container').html(response).imagesLoaded().then(function() {
                        // Remove the loading icon
                        $('.loading-icon').remove();
                        // If the user has scrolled...
                        if ($(window).scrollTop() !== 0) {
                            // First scroll the page to the top
                            $('html, body').animate({
                                scrollTop : 0
                            },400, function() {
                                // Make the max-height of the container exact for a smoother transition
                                function matchContainerHeight() {
                                    var containerHeight = $('#project-container').outerHeight();
                                    $('#project-wrapper.activated').css('max-height', containerHeight);
                                }
                                setTimeout(matchContainerHeight, 100);
                                $(window).on('resize', matchContainerHeight);
                                projectStyles();
                            });
                        // If the user has not scrolled...
                        } else {
                            // Make the max-height of the container exact for a smoother transition
                            function matchContainerHeight() {
                                var containerHeight = $('#project-container').outerHeight();
                                $('#project-wrapper.activated').css('max-height', containerHeight);
                            }
                            setTimeout(matchContainerHeight, 100);
                            $(window).on('resize', matchContainerHeight);
                            projectStyles();
                        }
                        return false;
                    });
                }
            });
        }
        // User event
        $('#content').on('click', '.post-link', function(e) {
            e.preventDefault();
            var projectTitle = $(this).data('title'), // data-title attribute for .post-link
                projectSlug = $(this).data('slug') // data-slug attribute for .post-link
            // Calls openProject() in context of 'this' (.post-link)
            openProject.call(this);
            $('head').find('title').text(projectTitle + ' | Keebs');
        });
    })(jQuery);
//*********************************************************
// Close button
//*********************************************************
    (function($) {
        // Close the project container
        function closeProject() {
            // Remove classes
            $(this).removeClass('fadeInDown');
            $('#project-wrapper').removeClass('activated').css('max-height', '');
            $('article.project').removeClass('grayscale grayscale-fade').css('opacity', '1');
            $('.post-container').removeClass('fadeInUp');
            $('article').removeClass('current');
            // Remove the corner ribbon since no projects are currently activated
            $('.corner-ribbon').remove();
            // Set the height of the project wrapper back to 0
            $('body.single #project-wrapper').css('max-height', 0);
            // Change the title of the document
            $('head').find('title').text(site.title);
        }
        // User event
        $('#content').on('click', '.close-button', function(e) {
            e.preventDefault();
            closeProject();
        });
    })(jQuery);
//*********************************************************
// Home button
//*********************************************************
    (function($) {
        // Load the Home page
        function loadHome() {
            var contactButton = $('#contact-button');
            $('#content').fadeOut(50, function() {
                $('<span class="loading-icon page-loading-icon"></span>').insertBefore('#content');
            }).load(site.url + '/ #primary', function() {
                $('.page-loading-icon').remove();
                $(this).fadeIn(50);
                $('body').removeClass('contact');
                $('#contact-info, #clients').removeClass('fadeInUp');
                $('#projects-list').addClass('fadeInUp');
                $('body.single #project-wrapper').css('max-height', 0);
            });
            // Change the Projects button to 'Contact'
            if ($('body').hasClass('contact')) {
                $(contactButton).removeClass('project-button').addClass('contact-button').attr('data-title', 'Get in touch').css('width', '96px').text('Get in touch').shuffleLetters();
                myIcons.to('mail');
            }
            // Change the title of the document
            $('head').find('title').text(site.title);
        }
        // User event
        $('.site-title a').on('click', function(e) {
            e.preventDefault();
            // Prevent accidental double clicks
            if (!$(this).data('isClicked')) {
                var link = $(this);
                loadHome();
                link.data('isClicked', true);
                setTimeout(function() {
                    link.removeData('isClicked')
                }, 1000);
            }
        });
    })(jQuery);
//*********************************************************
// Contact button
//*********************************************************
    (function($) {
        var contactButton = $('#contact-button');
        // Load the Contact page
        function loadContact() {
            $('#content').fadeOut(50, function() {
                $('<span class="loading-icon page-loading-icon"></span>').insertBefore('#content');
            }).load(site.url + '/contact/ #contact-keebs', function() {
                $('.page-loading-icon').remove();
                $(this).fadeIn(50);
                $('body').addClass('contact');
                $('#projects-list').removeClass('fadeInUp');
                $('#contact-info, #clients').addClass('fadeInUp');
            });
            // Change the Contact button to 'Projects'
            $(contactButton).removeClass('contact-button').addClass('project-button').attr('data-title', 'Projects').css('width', '71px').text('Projects').shuffleLetters();
            myIcons.to('work');
            // Change the title of the document
            $('head').find('title').text('Contact | Keebs');
        }
        // Load the Projects page
        function loadProjects() {
            $('#content').fadeOut(50, function() {
                $('<span class="loading-icon page-loading-icon"></span>').insertBefore('#content');
            }).load(site.url + '/ #primary', function() {
                $('.page-loading-icon').remove();
                $(this).fadeIn(50);
                $('body').removeClass('contact');
                $('#contact-info, #clients').removeClass('fadeInUp');
                $('#projects-list').addClass('fadeInUp');
                $('body.single #project-wrapper').css('max-height', 0);
            });
            // Change the Projects button to 'Contact'
            $(contactButton).removeClass('project-button').addClass('contact-button').attr('data-title', 'Get in touch').css('width', '96px').text('Get in touch').shuffleLetters();
            myIcons.to('mail');
            // Change the title of the document
            $('head').find('title').text(site.title);
        }
        // User event
        $('#mail-wrap').on('click', function(e) {
            e.preventDefault();
            // Prevent accidental double clicks
            if (!$(this).data('isClicked')) {
                var link = $(this);
                if (!contactButton.hasClass('project-button')) {
                    loadContact();
                } else {
                    loadProjects();
                }
                link.data('isClicked', true);
                setTimeout(function() {
                    link.removeData('isClicked')
                }, 500);
            }
        });
    })(jQuery);
//*********************************************************
// Single template
//*********************************************************
    // Check the first slide input
    $('body.single #slider input:first').attr('checked', 'checked');
    // Set the height of the project container
    $('body.single #project-container').imagesLoaded().then(function() {
        var containerHeight = $('#project-container').outerHeight();
        $('body.single #project-wrapper').css('max-height', containerHeight);
    });
    // Make the projects list grayscale if the project wrapper is activated
    if ( $('body.single #project-wrapper').hasClass('activated') ) {
        $('article.project').addClass('grayscale grayscale-fade').css('opacity', '0.4');
    }
//*********************************************************
// Shuffle Letters by Martin Angelov
//*********************************************************
    (function($){
        $.fn.shuffleLetters = function(prop){
            var options = $.extend({
                "step"      : 8,            // How many times should the letters be changed
                "fps"       : 60,           // Frames Per Second
                "text"      : "",           // Use this text instead of the contents
                "callback"  : function(){}  // Run once the animation is complete
            },prop)
            return this.each(function(){
                var el = $(this),
                    str = "";

                // Preventing parallel animations using a flag;
                if(el.data('animated')){
                    return true;
                }
                el.data('animated',true);

                if(options.text) {
                    str = options.text.split('');
                }
                else {
                    str = el.text().split('');
                }
                // The types array holds the type for each character;
                // Letters holds the positions of non-space characters;
                var types = [],
                    letters = [];
                // Looping through all the chars of the string
                for(var i=0;i<str.length;i++){
                    var ch = str[i];
                    if(ch == " "){
                        types[i] = "space";
                        continue;
                    }
                    else if(/[a-z]/.test(ch)){
                        types[i] = "lowerLetter";
                    }
                    else if(/[A-Z]/.test(ch)){
                        types[i] = "upperLetter";
                    }
                    else {
                        types[i] = "symbol";
                    }
                    letters.push(i);
                }
                el.html("");
                // Self executing named function expression:
                (function shuffle(start){
                    // This code is run options.fps times per second
                    // and updates the contents of the page element
                    var i,
                        len = letters.length,
                        strCopy = str.slice(0); // Fresh copy of the string
                    if(start>len){
                        // The animation is complete. Updating the
                        // flag and triggering the callback;
                        el.data('animated',false);
                        options.callback(el);
                        return;
                    }
                    // All the work gets done here
                    for(i=Math.max(start,0); i < len; i++){
                        // The start argument and options.step limit
                        // the characters we will be working on at once
                        if( i < start+options.step){
                            // Generate a random character at thsi position
                            strCopy[letters[i]] = randomChar(types[letters[i]]);
                        }
                        else {
                            strCopy[letters[i]] = "";
                        }
                    }
                    el.text(strCopy.join(""));
                    setTimeout(function(){
                        shuffle(start+1);
                    },1000/options.fps);
                })(-options.step);

            });
        };
        function randomChar(type){
            var pool = "";
            if (type == "lowerLetter"){
                pool = "abcdefghijklmnopqrstuvwxyz0123456789";
            }
            else if (type == "upperLetter"){
                pool = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            }
            else if (type == "symbol"){
                pool = ",.?/''(^)![]{}*&^%$#''"";
            }
            var arr = pool.split('');
            return arr[Math.floor(Math.random()*arr.length)];
        }
    })(jQuery);
//*********************************************************
// iPad fix for slider
//*********************************************************
    var iPadLabels = function () {
        function fix() {
            var labels = document.getElementsByTagName('label'),
                target_id,
                el;
            for (var i = 0; labels[i]; i++) {
                if (labels[i].getAttribute('for')) {
                    labels[i].onclick = labelClick;
                }
            }
        }
        function labelClick() {
            el = document.getElementById(this.getAttribute('for'));
            if (['radio', 'checkbox'].indexOf(el.getAttribute('type')) != -1) {
                el.setAttribute('selected', !el.getAttribute('selected'));
            } else {
                el.focus();
            }
        }
        return {
            fix: fix
        }
    }();
    window.onload = function () {
        iPadLabels.fix();
    }
//*********************************************************
// Annnd, we're done!
//*********************************************************
});