我发现了一些非常有用的教程,可以帮助我使用JavaScript来扩展和折叠内容,但是现在我不知道如何使其一次只能扩展一个。因此,当一个div扩展时,如果单击以展开另一个,它会折叠第一个。有任何想法吗?这是我遵循的教程
var coll = document.getElementsByClassName("collapsible");
var i;
for (i = 0; i < coll.length; i++) {
coll[i].addEventListener("click", function() {
this.classList.toggle("active");
var content = this.nextElementSibling;
if (content.style.maxHeight) {
content.style.maxHeight = null;
} else {
content.style.maxHeight = content.scrollHeight + "px";
}
});
}
.collapsible {
background-color: #eee;
color: #444;
cursor: pointer;
padding: 18px;
width: 100%;
border: none;
text-align: left;
outline: none;
font-size: 15px;
}
.content {
padding: 0 18px;
display: none;
overflow: hidden;
background-color: #f1f1f1;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button class="collapsible"> Expand </button>
<div class="content">
<p>Some content</p>
</div>
答案 0 :(得分:1)
您可以选择所有<div class="content">
,然后将每个设置为display: none
。下面的代码段:
var coll = document.getElementsByClassName("collapsible");
var i;
for (i = 0; i < coll.length; i++) {
coll[i].addEventListener("click", function() {
this.classList.toggle("active");
//add new code here
var contents = document.querySelectorAll('div.content')
contents.forEach((content) => {
content.style.display = "none"
})
var content = this.nextElementSibling;
if (content.style.display === "block") {
content.style.display = "none";
} else {
content.style.display = "block";
}
});
}
.collapsible {
background-color: #eee;
color: #444;
cursor: pointer;
padding: 18px;
width: 100%;
border: none;
text-align: left;
outline: none;
font-size: 15px;
}
.content {
padding: 0 18px;
display: none;
overflow: hidden;
background-color: #f1f1f1;
}
<button class="collapsible"> Expand </button>
<div class="content">
<p>Some content</p>
</div>
<button class="collapsible"> Expand </button>
<div class="content">
<p>Some content2</p>
</div>
希望这会有所帮助