javascript - jQuery .click() 事件不起作用。两个中的一个正在工作，另一个没有

Question

这个问题在这里已经有了答案:





Is there a way to add/remove several classes in one single instruction with classList?

(16 个回答)



addClass - can add multiple classes on same div?

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How to toggle font awesome icon on click?

(6 个回答)


8 个月前关闭。

$('.like-btn').click((e) => {
  e.target.classList = 'like-unlike-btn unlike-btn far fa-heart';
});

$('.unlike-btn').click((e) => {
  e.target.classList = 'like-unlike-btn like-btn far fa-heart';
});

.like-unlike-btn {
  color: #fb3958;
  font-size: 2rem;
  position: absolute;
  top: 0;
  left: 10px;
  cursor: pointer;
}

.like-unlike-btn:hover {
  color: rgb(252, 11, 11);
}

.unlike-btn {
  font-weight: bold;
}

.like-btn {
  font-weight: normal;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css"
    integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">

<i class="like-unlike-btn like-btn far fa-heart"></i>

为什么我的代码不起作用？
第一个点击事件工作正常，但第二个不工作
请建议一些其他的方法来做到这一点。

Answer 1

您可以将事件附加到主类 like-unlike-btn并使用 toggleClass反而 :

$('.like-unlike-btn').on('click', function(e) {
  $(this).toggleClass('unlike-btn like-btn');
});

.like-unlike-btn {
  color: gray;
  font-size: 2rem;
  position: absolute;
  top: 0;
  left: 10px;
  cursor: pointer;
}

.like-unlike-btn:hover {
  color: red !important;
}

.like-btn {
  color: red;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">

<i class="like-unlike-btn like-btn far fa-heart"></i>