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下面是一个由w3schools提供的javascript下拉菜单的简单代码，我想要两个下拉列表，因此我创建了一个更改元素和变量名称的副本。两个下拉菜单都可以正常工作，除非现在我无法点击打开的下拉菜单，只需点击网页上的任何地方，即可使用一个下拉菜单正常工作。那么如何在两次下降的同时做到这一点。如何通过点击页面上的任何位置关闭下拉菜单？
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
// Close the dropdown menu 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');
}
}
}
}
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction2() {
document.getElementById("myDropdown2").classList.toggle("show");
}
// Close the dropdown menu if the user clicks outside of it
window.onclick = function(event) {
if (!event.target.matches('.dropbtn2')) {
var dropdown = document.getElementsByClassName("dropdown-content2");
var e;
for (e = 0; i < dropdown.length; e++) {
var opendropdown = dropdown[e];
if (openDropdown.classList.contains('show')) {
openDropdown.classList.remove('show');
}
}
}
}/* Dropdown Button */
.dropbtn {
background-color: #4CAF50;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
/* Dropdown button on hover & focus */
.dropbtn:hover,
.dropbtn:focus {
background-color: #3e8e41;
}
/* The container <div> - needed to position the dropdown content */
.dropdown {
position: relative;
display: inline-block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
/* Links inside the dropdown */
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
/* Change color of dropdown links on hover */
.dropdown-content a:hover {
background-color: #f1f1f1
}
/* Show the dropdown menu (use JS to add this class to the .dropdown-content container when the user clicks on the dropdown button) */
.show {
display: block;
}
/* Dropdown Button */
.dropbtn2 {
background-color: #4CAF50;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
/* Dropdown button on hover & focus */
.dropbtn2:hover,
.dropbtn2:focus {
background-color: #3e8e41;
}
/* The container <div> - needed to position the dropdown content */
.dropdown2 {
position: relative;
display: inline-block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content2 {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
/* Links inside the dropdown */
.dropdown-content2 a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
/* Change color of dropdown links on hover */
.dropdown-content2 a:hover {
background-color: #f1f1f1
}
/* Show the dropdown menu (use JS to add this class to the .dropdown-content container when the user clicks on the dropdown button) */
.show {
display: block;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<table>
<tr>
<td>
<div class="dropdown">
<button onclick="myFunction()" class="dropbtn">Dropdown</button>
<div id="myDropdown" class="dropdown-content">
<a href="#">Link 1</a>
<a href="#">Link 2</a>
<a href="#">Link 3</a>
</div>
</div>
</td>
<td>
<div class="dropdown2">
<button onclick="myFunction2()" class="dropbtn">Dropdown2</button>
<div id="myDropdown2" class="dropdown-content2">
<a href="#">Link 1</a>
<a href="#">Link 2</a>
<a href="#">Link 3</a>
</div>
</div>
</td>
</tr>
</table>
感谢名单科坦试图加载DD菜单'内页制作功能window.onclick = function（event）{（“#notificationContainer”）.load（“notificationsbox.php”）; document.getElementById（“myDropdown”）。classList.remove（“show”）; $（“#scoreContainer”）.load（“scorebox.php”）; document.getElementById（“myDropdown2”）。classList.remove（“show”）; }'这个工作有点晚，需要太多的时间来加载容器中的页面是否有更好的方法。 –