如何创建：可折叠内容/手风琴

Learn how to create an accordion (collapsible content).

Create an accordion

第一步 - Add HTML：

<button class="accordion">Section 1</button>
<div class="panel">
  <p>Lorem ipsum...</p>
</div>
<button class="accordion">Section 2</button>
<div class="panel">
  <p>Lorem ipsum...</p>
</div>
<button class="accordion">Section 3</button>
<div class="panel">
  <p>Lorem ipsum...</p>
</div>

第二步 - Add CSS：

Set the style of the accordion

/* Set style for the button used to open and close the accordion panel */
.accordion {
  background-color: #eee;
  color: #444;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  text-align: left;
  border: none;
  outline: none;
  transition: 0.4s;
}
/* If the button is clicked (add .active class using JS), add background color and when the mouse hovers over it (hover) */
.active, .accordion:hover {
  background-color: #ccc;
}
/* Add style to the accordion panel. Note: It is hidden by default */
.panel {
  padding: 0 18px;
  background-color: white;
  display: none;
  overflow: hidden;
}

第三步 - Add JavaScript：

var acc = document.getElementsByClassName("accordion");
var i;
for (i = 0; i < acc.length; i++) {
  acc[i].addEventListener("click", function() {
    /* Toggle add and delete "active" class to highlight the control panel button */
    this.classList.toggle("active");
    /* Toggle hide and show active panel */
    var panel = this.nextElementSibling;
    if (panel.style.display === "block") {}}
      panel.style.display = "none";
    } else {
      panel.style.display = "block";
    }
  });
}

Coba sendiri

alat angklung animasi (geser ke bawah)

Untuk membuat alat angklung animasi, tambahkan max-height: 0danoverflow: hidden dan max-height efek transisi properti.

kemudian, gunakan JavaScript untuk menghitung dan menetapkan tinggi panel berdasarkan ukuran layar yang berbeda max-heightuntuk mencapai efek geser kandungan ke bawah:

<style>
.panel {
  padding: 0 18px;
  background-color: white;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
}
</style>
<script>
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";
    }
  });
}
</script>

Coba sendiri

Tambah ikon

Tambah simbol di setiap tombol untuk menunjukkan kandungan yang dapat dipegang atau ditutup:

.accordion:after {
  content: '\02795'; /* "tambah" (menambah) Unicode aksara */
  font-size: 13px;
  color: #777;
  float: right;
  margin-left: 5px;
}
.active:after {
  content: "\2796"; /* "menjangan" (menarik) Unicode aksara */
}

Coba sendiri