单击按钮时手风琴不工作

Question

我正在尝试在我的页面中添加手风琴。但是当我点击按钮时它没有切换。

这是我的Html

var acc = document.getElementsByClassName("accordion");
var i;

for (i = 0; i < acc.length; i++) {
  acc[i].addEventListener("click", function() {
    this.classList.toggle("active");
    var panel = this.nextElementSibling;
    if (panel.style.maxHeight) {
      panel.style.maxHeight = null;
    } else {
      panel.style.maxHeight = panel.scrollHeight + "px";
    }
  });
}

.blks {
  .accordion {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    transition: 0.4s;
    &:after {
      content: '[=11=]2B';
      color: #777;
      font-weight: bold;
      float: right;
      margin-left: 5px;
    }
    &:hover {
      background-color: #ccc;
    }
  }
  .active {
    background-color: #ccc;
    &:after {
      content: "12";
    }
  }
  .panel {
    padding: 0 18px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
  }
}

<div class="blks">

  <button class="accordion">Section 1</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

  <button class="accordion">Section 2</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

  <button class="accordion">Section 3</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

</div>

Answer 1

您的样式表是 sass/scss，需要编译或翻译成纯文本 CSS（这是您问题的答案）

另外我建议你委托

document.querySelector(".blks").addEventListener("click", function(e) {
  const tgt = e.target; 
  if (!tgt.matches(".accordion")) return; // not a button
  tgt.classList.toggle("active");
  var panel = tgt.nextElementSibling;
  if (panel.style.maxHeight) {
    panel.style.maxHeight = null;
  } else {
    panel.style.maxHeight = panel.scrollHeight + "px";
  }

});

.blks .accordion {
     background-color: #eee;
     color: #444;
     cursor: pointer;
     padding: 18px;
     width: 100%;
     border: none;
     text-align: left;
     outline: none;
     font-size: 15px;
     transition: 0.4s;
}
 .blks .accordion:after {
     content: '[=11=]2B';
     color: #777;
     font-weight: bold;
     float: right;
     margin-left: 5px;
}
 .blks .accordion:hover {
     background-color: #ccc;
}
 .blks .active {
     background-color: #ccc;
}
 .blks .active:after {
     content: "12";
}
 .blks .panel {
     padding: 0 18px;
     background-color: white;
     max-height: 0;
     overflow: hidden;
     transition: max-height 0.2s ease-out;
}

<div class="blks">

  <button class="accordion">Section 1</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

  <button class="accordion">Section 2</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

  <button class="accordion">Section 3</button>
  <div class="panel">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  </div>

</div>

单击按钮时手风琴不工作

Accordion is not working when I click the button

javascript

accordion

toggle