如何禁用响应式设计的JavaScript

Question

我一直在使用超大jQuery作为我网站的幻灯片背景.我正在使网站响应并使用css媒体查询.

我希望能够在低于480px时禁用该脚本.

这是实际滑块背景的脚本

$(document).ready(function(){

         jQuery(function($){

            $.supersized({

                // Functionality
                slideshow               :   1,          // Slideshow on/off
                autoplay                :   0,          // Slideshow starts playing automatically
                start_slide             :   1,          // Start slide (0 is random)
                stop_loop               :   0,          // Pauses slideshow on last slide
                random                  :   0,          // Randomize slide order (Ignores start slide)
                slide_interval          :   3000,       // Length between transitions
                transition              :   6,          // 0-None, 1-Fade, 2-Slide Top, 3-Slide Right, 4-Slide Bottom, 5-Slide Left, 6-Carousel Right, 7-Carousel Left
                transition_speed        :   1000,       // Speed of transition
                new_window              :   1,          // Image links open in new window/tab
                pause_hover             :   0,          // Pause slideshow on hover
                keyboard_nav            :   1,          // Keyboard navigation on/off
                performance             :   1,          // 0-Normal, 1-Hybrid speed/quality, 2-Optimizes image quality, 3-Optimizes transition speed // (Only works for Firefox/IE, not Webkit)
                image_protect           :   1,          // Disables image dragging and right click with Javascript

                // Size & Position                         
                min_width               :   0,          // Min width allowed (in pixels)
                min_height              :   0,          // Min height allowed (in pixels)
                vertical_center         :   1,          // Vertically center background
                horizontal_center       :   1,          // Horizontally center background
                fit_always              :   0,          // Image will never exceed browser width or height (Ignores min. dimensions)
                fit_portrait            :   1,          // Portrait images will not exceed browser height
                fit_landscape           :   0,          // Landscape images will not exceed browser width

                // Components                           
                slide_links             :   'blank',    // Individual links for each slide (Options: false, 'num', 'name', 'blank')
                thumb_links             :   1,          // Individual thumb links for each slide
                thumbnail_navigation    :   0,          // Thumbnail navigation
                slides                  :   [           // Slideshow Images
                                                    {image : '/img/backgrounds/street-dance-background.jpg', title : 'Image Credit: Maria Kazvan', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/kazvan-1.jpg', url : 'http://www.nonsensesociety.com/2011/04/maria-kazvan/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/kazvan-2.jpg', title : 'Image Credit: Maria Kazvan', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/kazvan-2.jpg', url : 'http://www.nonsensesociety.com/2011/04/maria-kazvan/'},  
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/kazvan-3.jpg', title : 'Image Credit: Maria Kazvan', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/kazvan-3.jpg', url : 'http://www.nonsensesociety.com/2011/04/maria-kazvan/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/wojno-1.jpg', title : 'Image Credit: Colin Wojno', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/wojno-1.jpg', url : 'http://www.nonsensesociety.com/2011/03/colin/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/wojno-2.jpg', title : 'Image Credit: Colin Wojno', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/wojno-2.jpg', url : 'http://www.nonsensesociety.com/2011/03/colin/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/wojno-3.jpg', title : 'Image Credit: Colin Wojno', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/wojno-3.jpg', url : 'http://www.nonsensesociety.com/2011/03/colin/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/shaden-1.jpg', title : 'Image Credit: Brooke Shaden', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/shaden-1.jpg', url : 'http://www.nonsensesociety.com/2011/06/brooke-shaden/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/shaden-2.jpg', title : 'Image Credit: Brooke Shaden', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/shaden-2.jpg', url : 'http://www.nonsensesociety.com/2011/06/brooke-shaden/'},
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/slides/shaden-3.jpg', title : 'Image Credit: Brooke Shaden', thumb : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.2/thumbs/shaden-3.jpg', url : 'http://www.nonsensesociety.com/2011/06/brooke-shaden/'}
                                            ],

                // Theme Options               
                progress_bar            :   1,          // Timer for each slide                         
                mouse_scrub             :   0

            });
        });

我只是想通过使用css就可以做到这一点,例如在我的媒体查询中只是将#supersized作为display:none

这是不好的做法,因为它仍然会运行脚本,是否最好以某种方式禁用它？

Answer 1

正如其他人提到的,你可以使用大量的jQuery插件.但是,如果你想要使用的只是简单的vanilla jQuery,你也可以做你想要的.

您可以在jquery中使用resize方法来检测窗口的大小.

$(window).resize(function() {
   if ($(this).width() > 480) {
      // call supersize method
   }
});

然后在doc ready上,只需确保调用resize窗口,以便它最初调用或不调用方法,具体取决于窗口的当前大小:

$(document).ready(function() {
   $(window).resize();
});

PS>如果您不需要在每次窗口调整大小时运行此脚本,而是仅在其低于480像素时运行,则可以在需要禁用或启用脚本后对绑定调整大小方法进行轻微修改.

Answer 2

您可以使用screen.width检测屏幕宽度,然后从那里确定要执行的操作.

if(screen.width < 480) { 
    // do any 480 width stuff here, or simply do nothing
    return;
} else {
    // do all your cool stuff here for larger screens
}

总结所有的动画和你的代码不希望为案件的其他块在屏幕尺寸小于480内运行.

需要注意的是,IE往往会做不同的事情,我没有IE测试,所以你可能想在那里运行screen.width并根据需要调整任何差异.但在Chrome中,screen.width返回1280,这是我的屏幕的正确宽度.