gpt4 book ai didi

javascript - 为什么我的代码在IE11中不起作用

转载 作者:行者123 更新时间:2023-12-02 05:58:42 25 4
gpt4 key购买 nike

Internet Explorer 11 中,当我单击按钮外部时,该子菜单不会隐藏,但在 Google Chrome Firefox 中可以正常工作。

http://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_onclick_dropdown

<!DOCTYPE html>
<html>
<head>
<style>
.dropbtn {
background-color: #4CAF50;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}

.dropbtn:hover, .dropbtn:focus {
background-color: #3e8e41;
}

.dropdown {
position: relative;
display: inline-block;
}

.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
overflow: auto;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}

.dropdown-content a:hover {background-color: #f1f1f1}

.show {display:block;}
</style>
</head>
<body>
<h2>Clickable Dropdown</h2>
<p>Click on the button to open the dropdown menu.</p>
<div class="dropdown">
<button id="myBtn" class="dropbtn">Dropdown</button>
<div id="myDropdown" class="dropdown-content">
<a href="#home">Home</a>
<a href="#about">About</a>
<a href="#contact">Contact</a>
</div>
</div>
<script>
// Get the button, and when the user clicks on it, execute myFunction
document.getElementById("myBtn").onclick = function() {myFunction()};
// myFunction toggles between adding and removing the show class, which is used to hide and show the dropdown content
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}

// Close the dropdown if the user clicks outside of it
window.onclick = function(event) {
if (!event.target.matches('.dropbtn')) {
var dropdowns = document.getElementsByClassName("dropdown-content");
var i;
for (i = 0; i < dropdowns.length; i++) {
var openDropdown = dropdowns[i];
if (openDropdown.classList.contains('show')) {
openDropdown.classList.remove('show');
}
}
}
}
</script>
</body>
</html>

最佳答案

event.target.matches在Internet Explorer中不存在。 Element.matches() 中的“浏览器兼容性”表表示,从IE 9开始,此方法可用,但使用非标准名称msMatchesSelector

因此,请尝试:

window.onclick = function(event) {
matches = event.target.matches ? event.target.matches('.dropbtn') : event.target.msMatchesSelector('.dropbtn');
if (!matches) {
var dropdowns = document.getElementsByClassName("dropdown-content");
var i;
for (i = 0; i < dropdowns.length; i++) {
var openDropdown = dropdowns[i];
if (openDropdown.classList.contains('show')) {
openDropdown.classList.remove('show');
}
}
}
}

关于javascript - 为什么我的代码在IE11中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37304037/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com