javascript – 在页面中多次使用时,JQuery插件无法正常工作

我正在尝试编写一个名为grid2carousel的 JQuery插件,该插件在桌面设备上的Bootstrap样式网格中获取一些内容,并在较小的屏幕上成为旋转木马.

如果插件是页面上唯一的实例,但如果有多个插件则会遇到一些问题.我在这里创建了一个Codepen来演示这个问题：

http://codepen.io/decodedcreative/pen/BzdBpb

尝试注释掉codepen的HTML部分中的一个组件,调整浏览器的大小,直到它成为轮播,然后再次重复此过程并取消注释

每当浏览器宽度低于HTML中数据属性中指定的断点时,插件就会运行一个名为SetupPlugin的内部函数.如果浏览器宽度超过此断点,则称为DestroyPlugin的函数会将HTML恢复为其原始状态.像这样：

checkDeviceState = function(){
            if($(window).width()>breakpointValue){
                destroyPlugin();
            }else{
                if(!$element.hasClass('loaded')){
                    setupPlugin();
                }
            }
        },

以下是我的插件代码.有人能给我一个关于我在这里做错了什么的指针吗？

(function (window,$){
$.grid2Carousel = function (node,options){
    var
    options = $.extend({slidesSelector: '.g2c-slides',buttonsSelector: '.g2c-controls .arrow'},{},options),$element = $(node),elementHeight = 0,$slides = $element.find(options.slidesSelector).children(),$buttons = $element.find(options.buttonsSelector),noOfItems = $element.children().length + 1,breakpoint = $element.data("bp"),breakpointValue = 0;

    switch(breakpoint){
        case "sm":
            breakpointValue = 767;
            break;
        case "md":
            breakpointValue = 991;
            break;
        case "lg":
            breakpointValue = 1199;
            break;
    }

    setupPlugin = function(){

        // Add loaded CSS class to parent element which adds styles to turn grid layout into carousel layout
        $element.addClass("loaded");

        // Get the height of the tallest child element
        elementHeight = getTallestInCollection($slides)

        // As the carousel slides are stacked on top of each other with absolute positioning,the carousel doesn't have a height. Set its height using JS to the height of the tallest item;
        $element.height(elementHeight);

        // Add active class to the first slide
        $slides.first().addClass('active');


        $buttons.on("click",changeSlide);

    },destroyPlugin =  function(){
        $element.removeClass("loaded");
        $element.height("auto");
        $buttons.off("click");
        $slides.removeClass("active");
    },checkDeviceState = function(){
        if($(window).width()>breakpointValue){
            destroyPlugin();
        }else{
            if(!$element.hasClass('loaded')){
                setupPlugin();
            }
        }
    },changeSlide = function(){
        var $activeSlide = $slides.filter(".active"),$nextActive = null,prevSlideNo = $activeSlide.prev().index() + 1,nextSlideNo = $activeSlide.next().index() + 1;

        if($(this).hasClass('left')){


            if(prevSlideNo !== 0){
                $nextActive = $activeSlide.prev();
                $nextActive.addClass('active');
                $slides.filter(".active").not($nextActive).removeClass("active");
            }else{
                $nextActive = $slides.last();
                $nextActive.addClass('active');
                $slides.filter(".active").not($nextActive).removeClass("active");
            }

        }else if($(this).hasClass('right')){


            if(nextSlideNo !== 0){
                $nextActive = $activeSlide.next();
                $nextActive.addClass('active');
                $slides.filter(".active").not($nextActive).removeClass("active");
            }else{
                $nextActive = $slides.first();
                $nextActive.addClass('active');
                $slides.filter(".active").not($nextActive).removeClass("active");
            }

        }
    },getTallestInCollection = function(collection){

        $(collection).each(function(){
            if($(this).outerHeight() > elementHeight){
                elementHeight = $(this).outerHeight();
            }
        });

        return elementHeight;

    };

    setupPlugin();
    checkDeviceState();
    $(window).on("resize",checkDeviceState);

}




$.fn.grid2Carousel = function (options) {
    this.each( function (index,node) {
        $.grid2Carousel(node,options)
    });

    return this
}
})(window,jQuery);

非常感谢,

詹姆士

解决方法

请检查插件代码中的第30行,它看起来你只是忘记添加var关键字而不是创建局部变量来存储函数setupPlugin,destoryPlugin等你已经创建了全局变量然后每个新的初始化你的插件重写此函数以指向新创建的滑块.

setupPlugin = function(){

应该

var setupPlugin = function(){

更新代码here.