jquery动态地为DIV附加类

Question

如何使用jquery为div添加'class'。 这是实际的div。

<div class="swiper-container swiper-nav">
<div class="swiper-wrapper">
    <div class="swiper-slide"><img src="assets/Images/Accessories/Ties/Knitted/LudlowDotKnittedTie.jpg"></div>
</div>
</div>

我需要将“active-nav”类附加到“swiper-slide”div

结果如下：

<div class="swiper-slide active-nav"><img src="assets/Images/Accessories/Ties/Knitted/LudlowDotKnittedTie.jpg"></div>

Answer 1

怎么样

$(".swiper-slide").addClass ("active-nav");

Answer 2

$('.thisclick').click(function(){
  $('.swiper-slide').addClass('active-nav');
});