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我正在做的這個系統的問題是，我似乎無法使下拉按鈕與對方合作。我只想點擊另一個按鈕時點擊的第一個按鈕關閉。到目前爲止，他們只是彼此堆疊，除非再次點擊或在下拉區域外單擊。如何正確處理多個下拉按鈕
這裏是我的代碼：
<html>
<style>
.dropbtn {
background-color: #00BFFF;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
.dropbtn:hover, .dropbtn:focus {
background-color: #1E90FF;
}
.dropdown2 {
position: relative;
display: block;
}
.dropdown-content2 {
display: none;
position: absolute;
background-color: #1E90FF;
min-width: 160px;
overflow: auto;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content2 a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown2 a:hover {
background-color: #00BFFF;
}
.dropdown {
position: relative;
display: block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #1E90FF;
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 a:hover {
background-color: #00BFFF;
}
.show {
display:block;
position: relative;
left:18.6%;
top:-20%;
width: 80%;
}
.border2 {
float: left;
border: 2px #FA5858;
background-color: #FFFFFF;
margin: 0 auto;
padding-bottom:40px;
padding-top:5px;
width : 86%;
height : 44%;
top : -10%;
left : 7%;
position : relative;
padding: 1em;
}
</style>
<body>
<div class = "border2">
<div style = "font-size:25px;list-style-type: none;margin: 0;padding: 10px;overflow: hidden;background-color: #BDBDBD;
position : relative;top : -10%;width : 101.2%;left:-1.5%;"><strong>NEED HELP?</strong></div>
<div class="dropdown">
<button onclick="myFunction()" class="dropbtn" style = "position:absolute; left:-1.5%; width:20%;">GUIDES</button>
<div id="myDropdown" class="dropdown-content">
<ul>
<li><a>asasd.</a></li>
<li><a>Thasdat.</a></li>
<li><a>test2.</a></li>
</ul>
</div>
<br><br><br><br>
<button onclick="myFunction2()" class="dropbtn" style = "position:absolute; left:-1.5%; width:20%;">SUPPORT</button>
<div id="myDropdown2" class="dropdown-content2">
<ul>
<li><a>test.</a></li>
<li><a>test.</a></li>
</ul>
</div>
</div>
</div>
<script>
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
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');
}
}
}
}
function myFunction2() {
document.getElementById("myDropdown2").classList.toggle("show");
}
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>
幫一下忙，包括樣本。 –