Question

我写了一个javascript函数来禁用＆＃34;之前的＃34;当前幻灯片为0时的箭头，并禁用＆＃34; next＆＃34;我到达最后一张幻灯片时的箭头。我想要＆＃34;之前＆＃34;页面加载时仅禁用一次箭头，之后即使在到达第一张幻灯片（当前幻灯片：0）后，我想要＆＃34;之前的＆＃34;箭头可见。目前，我有3张幻灯片（0,1,2）

我尝试使用onload（）函数仅在第一次加载时隐藏箭头，但这并不起作用。

＆＃13;

$(function(){  
  $('.hero-slider').slick({ 
        slidesToShow: 1,
        slidesToScroll: 1,
        arrows: true,
        dots:false,
        infinite: true
    });
  var currentSlide = $('.hero-slider').slick('slickCurrentSlide');
    if(currentSlide==0)
    {
        $('.slick-prev').hide();
    }
    else if(currentSlide==2)
    {
        $('.slick-next').hide();
    }
});

$('.hero-slider').on('afterChange', function(){
  console.log($('.hero-slider').slick('slickCurrentSlide'));
  var currentSlide = $('.hero-slider').slick('slickCurrentSlide');
    if(currentSlide==0)
    {
        $('.slick-prev').hide();
        $('.slick-next').show();
    }
    else if(currentSlide==2)
    {
        $('.slick-next').hide();
        $('.slick-prev').show();
    }
    if(currentSlide>0 && currentSlide<2)
    {
        $('.slick-prev').show();
        $('.slick-next').show();
    }
});

＆＃13;

Answer 1

仅保留滑块初始化代码并删除事件处理程序和其他代码。

jQuery(function($) {  
 $('.hero-slider').slick({ 
        slidesToShow: 1,
        slidesToScroll: 1,
        arrows: true,
        dots:false,
        infinite: true
    });
});

＆＃13;

jQuery(function($) {  
 $('.hero-slider').slick({ 
        slidesToShow: 1,
        slidesToScroll: 1,
        arrows: true,
        dots:false,
        infinite: true
    });
});

＆＃13;

<link href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.js"></script>
<section class="info-banner">
      <div class="hero-slider">
        <div class="info-slider-content" style="background-image: url(images/visual2.jpg);">
          <div class="banner-content info-content">
            <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.Aenean commodo ligula                    eget dolor. Aenean massa. Cum sociis natoque penatibus et </p>          
          </div>
        </div>
        <div class="info-slider-content" style="background-image: url(images/visual3.jpg);">
          <div class="banner-content info-content">
            <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula                  eget dolor. Aenean massa</p>
          </div>
        </div>
        <div class="info-slider-content" style="background-image: url(images/visual2.jpg);">
          <div class="banner-content info-content">
            <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula                  eget dolor. Aenean massa. Cum sociis natoque penatibus et </p>
          </div>
        </div>
      </div>
    </section>

＆＃13;

更新：如果您想最初隐藏按钮，请在更改幻灯片后更新事件处理程序中的按钮一次（使用one()方法仅执行一次）。

jQuery(function($) {
  $('.hero-slider').slick({
    slidesToShow: 1,
    slidesToScroll: 1,
    arrows: true,
    dots: false,
    infinite: true
  });
  var currentSlide = $('.hero-slider').slick('slickCurrentSlide');
  $('.slick-prev').toggle(currentSlide != 0);
  $('.slick-next').toggle(currentSlide != 2);

  $('.hero-slider').one('afterChange', function() {
    $('.slick-prev,.slick-next').show();
  });
});

＆＃13;

jQuery(function($) {
  $('.hero-slider').slick({
    slidesToShow: 1,
    slidesToScroll: 1,
    arrows: true,
    dots: false,
    infinite: true
  });
  var currentSlide = $('.hero-slider').slick('slickCurrentSlide');
  $('.slick-prev').toggle(currentSlide != 0);
  $('.slick-next').toggle(currentSlide != 2);
  
  $('.hero-slider').one('afterChange', function() {
    $('.slick-prev,.slick-next').show();
  });
});

＆＃13;

<link href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.js"></script>
<section class="info-banner">
  <div class="hero-slider">
    <div class="info-slider-content" style="background-image: url(images/visual2.jpg);">
      <div class="banner-content info-content">
        <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et</p>
      </div>
    </div>
    <div class="info-slider-content" style="background-image: url(images/visual3.jpg);">
      <div class="banner-content info-content">
        <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa</p>
      </div>
    </div>
    <div class="info-slider-content" style="background-image: url(images/visual2.jpg);">
      <div class="banner-content info-content">
        <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et</p>
      </div>
    </div>
  </div>
</section>

＆＃13;

在光滑滑块中仅禁用前一个箭头一次

1 个答案: