javascript - How to toggle single class in jquery without affecting same class elements?

Question

I'm setting up a reddit-like commenting system on my website. Every comments has a little button in the right corner that collapses the comment.

I have the comment collapse by JQuery toggleClass.

$(".button").click(function() {

  $('.bottomtext').toggleClass('bottomtext-small');
  $('.upvote').toggleClass('upvote-small');
  $('.downvote').toggleClass('downvote-small');
  $('.main-content').toggleClass('main-content-small');
  $('.button').toggleClass('button-small');

});

The comment collapsing works fine on one comment, but since I toggle the class, every comment collapses. How can I only affect the comment which button I am clicking?

JSFiddle: https://jsfiddle.net/j765rkpc/7/

标签： javascriptjqueryhtmlcss

Answer 1

您似乎需要获取具有这些类名的元素，并且与单击的按钮属于同一帖子的一部分，您可以这样做：

$(".button").click(function() {
  const $post = $(this).closest('.post-container');
  $post.find('.bottomtext').toggleClass('bottomtext-small');
  $post.find('.upvote').toggleClass('upvote-small');
  $post.find('.downvote').toggleClass('downvote-small');
  $post.find('.main-content').toggleClass('main-content-small');
  $post.find('.button').toggleClass('button-small');
});

.post-container {
  background-color: yellow;
  margin: auto;
  position: relative;
  display: flex;
  width: 75%;
  max-width: 1440px;
}


/*left side*/

.left-side {
  position: relative;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 50px;
  max-width: 50px;
  min-width: 50px;
  background: lightblue;
  padding-left: 5px;
  padding-right: 5px;
}


/*main post*/

.post {
  margin: 0;
  padding: 0;
  flex-grow: 1;
}

.main-content p {
  margin: 0;
  padding: 0;
  padding: 10px;
}

.main-content {
  margin: 0;
  padding: 0;
  flex-grow: 1;
}

.contain img {
  width: 50%;
}

.toptext {
  margin: 0;
  padding: 0;
  padding-top: 10px;
  padding-left: 10px;
  height: 20px;
  color: #808486;
  font-size: 12px;
  background-color: lightgrey;
}

.bottomtext {
  margin: 0;
  padding: 0;
  padding-left: 5px;
  height: 15px;
  background: red;
  font-size: 14px;
  font-weight: bold;
  color: #878a8c;
}

.bottomtext img {
  margin-bottom: -2px;
  padding-right: 5px;
}

.toptext b {
  color: black;
}

.left-side .upvote {
  padding-bottom: 5px;
}

.left-side .downvote {
  padding-top: 7px;
}

.username {
  color: blue;
}

.main-content-small {
  margin: 0;
  padding: 0;
  flex-grow: 1;
  display: none;
}

.contain-small img {
  width: 50%;
  display: none;
}

.bottomtext-small {
  margin: 0;
  padding: 0;
  padding-left: 5px;
  height: 15px;
  background: red;
  font-size: 14px;
  font-weight: bold;
  color: #878a8c;
  display: none;
}

.left-side .upvote-small {
  padding-bottom: 5px;
  display: none;
}

.left-side .downvote-small {
  padding-top: 7px;
  display: none;
}

.button {
  position: absolute;
  top: 8px;
  right: 10px;
  background-color: white;
  border: 1px solid black;
  height: 14px;
  width: 20px;
}

.button:hover {
  background-color: grey;
}

.button-small {
  position: absolute;
  top: 5px;
  right: 10px;
  background-color: white;
  border: 1px solid black;
  height: 20px;
  width: 7px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="post-container">
  <div class="left-side">
    <div> <img class="upvote" src="https://i.imgur.com/AdwzPRs.png" height="15"> </div>
    <div> <img class="downvote" src="https://i.imgur.com/XoJ1Jjy.png" height="15"> </div>
  </div>
  <div class="post">
    <p class="toptext">
      <input type="button" class="button"></input>
      <span class="username">webdev18</span>&nbsp;&nbsp;&nbsp;&nbsp;33 points&nbsp;&nbsp;18 minutes ago
    </p>
    <div class="main-content">
      <p class="contain-com">
        When I want to collapse this comment by clicking the button in the corner...
      </p>
      <p class="bottomtext">
        <img src="https://i.imgur.com/1IIJe1r.png" height="15">Respond
      </p>
    </div>
  </div>
</div>

<div class="post-container">
  <div class="left-side">
    <div> <img class="upvote" src="https://i.imgur.com/AdwzPRs.png" height="15"> </div>
    <div> <img class="downvote" src="https://i.imgur.com/XoJ1Jjy.png" height="15"> </div>
  </div>
  <div class="post">
    <p class="toptext">
      <input type="button" class="button"></input>
      <span class="username">webdev18</span>&nbsp;&nbsp;&nbsp;&nbsp;33 points&nbsp;&nbsp;18 minutes ago
    </p>
    <div class="main-content">
      <p class="contain-com">
        ...both comments collapse.
      </p>
      <p class="bottomtext">
        <img src="https://i.imgur.com/1IIJe1r.png" height="15">Respond
      </p>
    </div>
  </div>
</div>