我编写了一个函数，当您单击适用的按钮时，该函数会隐藏或显示 div 的内容。但是，当我这样做时，您必须单击该按钮几次才能显示内容。之后只需要单击一次，直到单击一个不相关的按钮，就会发生同样的事情。这是函数:请问有人有解决方案吗？
function openBtn(){
var acc = document.getElementsByClassName("myDIV");
var i;
for (i = 0; i < acc.length; i++) {
acc[i].onclick = function() {
this.classList.toggle("active");
var panel = this.nextElementSibling;
if (panel.style.display === "block") {
panel.style.display = "none";
} else {
panel.style.display = "block";
}
};
}
}
更新 以下是请求的网站的完整代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="sample_reception_page.css">
<style>
.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;
}
.active, .accordion:hover {
background-color: #ccc;
}
.panel {
padding: 0 18px;
display: none;
background-color: white;
overflow: hidden;
}
.close {
float: right;
padding: 12px 16px 12px 16px;
}
.close:hover {
background-color: #f44336;
color: white;
}
</style>
</head>
<body>
<h2>Example</h2>
<button onclick="newSample()">ADD</button>
<div id="samplesinfo">
<div class="test">
<button onclick="delbtn()" class="delbtn" id="delbtn" style="float: right;">Delete</button>
<button onclick="openBtn()" id="sample" class="accordion" style="float: left;">Button</button>
<div id="usrInput" class="panel">
<input type="text" name="test">
</div>
</div>
</div>
<div id="paste">
</div>
<script>
function openBtn(){
var acc = document.getElementsByClassName("accordion");
var i;
for (i = 0; i < acc.length; i++) {
acc[i].onclick = function() {
this.classList.toggle("active");
var panel = this.nextElementSibling;
if (panel.style.display === "block") {
panel.style.display = "none";
} else {
panel.style.display = "block";
}
};
}
}
function newSample() {
var variable = document.getElementById("samplesinfo");
var copy = variable.cloneNode(true);
var paste = document.getElementById("paste");
paste.appendChild(copy)
}
function delbtn() {
var delbtn = document.getElementsByClassName("delbtn");
var i;
for (i = 0; i < delbtn.length; i++) {
delbtn[i].onclick = function() {
var div = this.parentElement;
div.remove(div);
}
}
}
</script>
</body>
</html>
最佳答案
您正在使用 class="accordion" 对按钮应用多次点击。
从此按钮中删除内联 onclick:
<button id="sample" class="accordion" style="float: left;">Button</button>
定义后调用openBtn。
function openBtn() {
var acc = document.getElementsByClassName("accordion");
var i;
for (i = 0; i < acc.length; i++) {
acc[i].onclick = function() {
this.classList.toggle("active");
var panel = this.nextElementSibling;
if (panel.style.display === "block") {
panel.style.display = "none";
} else {
panel.style.display = "block";
}
};
}
}
openBtn()
可能会更改 openBtn 函数的名称，以反射(reflect)它实际执行的操作，即将 onclick 事件监听器添加到具有 accordion 类的所有按钮。
关于javascript - 显示/隐藏 DIV 元素 Javascript 时出现多次不必要的点击，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50755854/