CSS手風(fēng)琴展開是一種常用的網(wǎng)頁(yè)布局方式，它可以讓網(wǎng)頁(yè)內(nèi)容在垂直方向上折疊和展開，從而實(shí)現(xiàn)頁(yè)面的動(dòng)態(tài)交互效果，下面是一些關(guān)于CSS手風(fēng)琴展開的示例代碼和步驟，幫助你快速入門。

我們需要?jiǎng)?chuàng)建一個(gè)HTML結(jié)構(gòu)，包含手風(fēng)琴的頭部和內(nèi)容區(qū)域。

<div class="accordion">
  <div class="accordion-item">
    <a class="accordion-title" href="#">Title 1</a>
    <div class="accordion-content">
      <p>Content 1</p>
    </div>
  </div>
  <div class="accordion-item">
    <a class="accordion-title" href="#">Title 2</a>
    <div class="accordion-content">
      <p>Content 2</p>
    </div>
  </div>
  <div class="accordion-item">
    <a class="accordion-title" href="#">Title 3</a>
    <div class="accordion-content">
      <p>Content 3</p>
    </div>
  </div>
</div>

我們需要使用CSS來定義手風(fēng)琴的樣式和動(dòng)畫效果。

.accordion {
  width: 200px;
  margin: 0 auto;
}
.accordion-item {
  border-bottom: 1px solid #ccc;
}
.accordion-title {
  display: block;
  padding: 10px;
  background-color: #f5f5f5;
  color: #333;
  text-decoration: none;
}
.accordion-content {
  display: none;
  padding: 10px;
  background-color: #fff;
}

我們需要使用JavaScript來添加手風(fēng)琴的交互邏輯。

var accordion = document.querySelector('.accordion');
var accordionItems = accordion.querySelectorAll('.accordion-item');
var accordionTitle = accordion.querySelectorAll('.accordion-title');
var accordionContent = accordion.querySelectorAll('.accordion-content');
var accordionHeight = accordion.offsetHeight;
var accordionItemHeight = accordionItems[0].offsetHeight;
var accordionTitleHeight = accordionTitle[0].offsetHeight;
var accordionContentHeight = accordionContent[0].offsetHeight;
var openIndex = -1;
var openFlag = true;
for (var i = 0; i < accordionItems.length; i++) {
  if (openFlag) {
    openIndex = i;
    openFlag = false;
  } else {
    if (i == openIndex) { // 關(guān)閉當(dāng)前項(xiàng)，并重新打開下一項(xiàng)，直到所有項(xiàng)都打開一次后，回到***項(xiàng)并關(guān)閉，然后循環(huán)往復(fù)，如果所有項(xiàng)都關(guān)閉了，則回到***項(xiàng)并重新打開，如果所有項(xiàng)都打開了，則回到***項(xiàng)并重新關(guān)閉，如果所有項(xiàng)都既打開又關(guān)閉了，則回到***項(xiàng)并重新打開并關(guān)閉，以此類推，這樣可以實(shí)現(xiàn)手風(fēng)琴的展開和折疊效果。