所以我有这些伸缩面板,当我单击其中的一个时,我在其中添加了两个类,但是当我单击另一个伸缩面板时,我想从其他伸缩中删除这些类,并且仅应用于当前单击的伸缩蜂。到目前为止,上面的代码是我提出的。它有效,但是还有其他“干净/优雅”的方式吗?

<div class="panels">
    <div class="panel panel1">
      <p>Hey</p>
      <p>Let's</p>
      <p>Dance</p>
    </div>
    <div class="panel panel2">
      <p>Give</p>
      <p>Take</p>
      <p>Receive</p>
    </div>
    <div class="panel panel3">
      <p>Experience</p>
      <p>It</p>
      <p>Today</p>
    </div>
    <div class="panel panel4">
      <p>Give</p>
      <p>All</p>
      <p>You can</p>
    </div>
    <div class="panel panel5">
      <p>Life</p>
      <p>In</p>
      <p>Motion</p>
    </div>
  </div>


js片段:

const panels = document.querySelectorAll('.panel');

function toggleOpen(){
    panels.forEach(panel => panel.classList.remove('open','open-active'));
    this.classList.toggle('open');
    this.classList.toggle('open-active');
}
panels.forEach(panel => panel.addEventListener('click', toggleOpen));

最佳答案

您可以在父元素上监听冒泡的click事件。使用closest方法(FF和Chrome),可以将代码简化为:

const panels = document.querySelector('.panels');

panels.addEventListener('click', function(e) {
    const panel = panels.querySelector('.open');
    if (panel) panel.classList.remove('open', 'open-active');
    e.target.closest('.panel').classList.add('open', 'open-active');
});


或者,使用一个可以记住当前选定面板的闭包:

(function (panels, panel) {
    panels.addEventListener('click', function(e) {
        if (panel) panel.classList.remove('open', 'open-active');
        (panel = e.target.closest('.panel')).classList.add('open', 'open-active');
    });
})(document.querySelector('.panels'));

关于javascript - Javascript从X元素中添加/删除类,但1,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/42587093/

10-12 06:35