如果没有足够的项目可滚动，如何在OwlCarousel2中禁用上一个/下一个? [英] How can I disable previous/next in OwlCarousel2 if there aren't enough items to scroll?

问题描述

如果没有足够的项目可滚动，是否可以禁用上一个和下一个链接?

Is there a way to disable the previous and next links if there aren’t enough items to scroll?

例如: http://truewest.nextmp.net/special-programs 这些画廊允许有4个项目(桌面)，此库中只有4个项目，但分页按钮仍会出现，但应禁用.

For example: http://truewest.nextmp.net/special-programs these galleries allow for 4 items (desktop), there are only 4 items in this gallery but the buttons to pagination still appear, but should be disabled.

我知道以前的版本中有一种方法，但是.disabled类没有加载到该版本的链接中吗?在任何一个演示中，我都没有看到它这样做.

I know there was a way to do it in the previous version, but the .disabled class doesn’t load into the links on this one? I don’t see it doing so in any of the demos either...

我可以使用一些其他的jquery来覆盖它吗，还是我缺少任何内置的东西?

Could I use some additional jquery to override this, or is there anything built-in I that I'm missing?

这是我的代码:

        $(".owl-carousel").owlCarousel({
            items: 4,
            loop: true,
            rewindNav: false,
            autoplayHoverPause: true,
            margin: 0,
            dots: false,
            navText: "<>",
            responsive:{
                0:{ // breakpoint from 0 up - small smartphones
                    items:1,
                    nav:true
                },
                480:{  // breakpoint from 480 up - smartphones // landscape
                    items:2,
                    nav:false
                },
                768:{ // breakpoint from 768 up - tablets
                    items:3,
                    nav:true,
                    loop:false
                },
                992:{ // breakpoint from 992 up - desktop
                    items:4,
                    nav:true,
                    loop:false
                }
            }

        });

推荐答案

Owl Carousel 2提供了许多有用的事件，您可以用来实现此目的:

Owl Carousel 2 provides a number of useful events which you can use to achieve this:

var $owl = $('.owl-carousel');

$owl.on('initialized.owl.carousel resized.owl.carousel', function(e) {
    $(e.target).toggleClass('hide-nav', e.item.count <= e.page.size);
});

$owl.owlCarousel({ ... });

此片段与initialized和resized事件挂钩，可在首次初始化幻灯片或调整页面大小时触发功能.该功能将幻灯片中的元素数量与页面大小(一次显示的幻灯片数量)进行比较；如果只有足够的项目显示一页，则将hide-nav类添加到幻灯片中.然后，您可以使用CSS隐藏导航元素:

This snippet hooks into the initialized and resized events to trigger a function when the slideshow is first initialised or when the page is resized. The function compares how many elements are in your slideshow with the page size (the number of slides shown at once); if there are only enough items to display one page, the hide-nav class gets added to the slideshow. You can then use CSS to hide the nav elements:

.hide-nav .owl-controls {
    display: none;
}

如果您添加或删除幻灯片或类似的内容，则可能需要加入其他事件，以便适当地显示或隐藏导航:

If you add or remove slides or anything fancy like that, you might need to hook into additional events so your nav is displayed or hidden as appropriate: http://www.owlcarousel.owlgraphic.com/docs/api-events.html

这篇关于如果没有足够的项目可滚动，如何在OwlCarousel2中禁用上一个/下一个?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！