我正在尝试在我的网站上做一个标签功能，我希望有那个标签响应。所以我做了这样的代码：
null
function openCity(evt, cityName) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
}
// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();/* Style the tab */
.tab {
overflow: hidden;
border: 1px solid #ccc;
background-color: #f1f1f1;
}
/* Style the buttons inside the tab */
.tab button {
background-color: inherit;
float: left;
border: none;
outline: none;
cursor: pointer;
padding: 14px 16px;
transition: 0.3s;
font-size: 17px;
}
/* Change background color of buttons on hover */
.tab button:hover {
background-color: #ddd;
}
/* Create an active/current tablink class */
.tab button.active {
background-color: #ccc;
}
/* Style the tab content */
.tabcontent {
display: none;
padding: 6px 12px;
border: 1px solid #ccc;
border-top: none;
}
/* Style the close button */
.topright {
float: right;
cursor: pointer;
font-size: 28px;
}
.topright:hover {color: red;}<div class="tab">
<button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">London</button>
<button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
<button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>
<div id="London" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">×</span>
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<div id="Paris" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">×</span>
<h3>Paris</h3>
<p>Paris is the capital of France.</p>
</div>
<div id="Tokyo" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">×</span>
<h3>Tokyo</h3>
<p>Tokyo is the capital of Japan.</p>
</div>null
现在我有两样东西，
>
首先，我希望在单击标题（伦敦、巴黎、东京）时关闭选项卡，然后在单击该标题时从该标题中删除活动类。
其次，我希望有两个标签在行的响应，第三个标签在第二行，然后单击打开被点击的标签，然后向下推第三个标签。
任何提示都会有帮助，提前谢谢
给你发行号。1、你可以从“开放”改为“切换”，通过检查当前城市是否显示->然后你隐藏，否则你显示。
null
function toggleCity(evt, cityName) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
var prev_state_display = document.getElementById(cityName).style.display;
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
if( prev_state_display === "none"){
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
} else {
document.getElementById(cityName).style.display = "none";
evt.currentTarget.className.replace(" active", "");
}
}
// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();/* Style the tab */
.tab {
overflow: hidden;
border: 1px solid #ccc;
background-color: #f1f1f1;
}
/* Style the buttons inside the tab */
.tab button {
background-color: inherit;
float: left;
border: none;
outline: none;
cursor: pointer;
padding: 14px 16px;
transition: 0.3s;
font-size: 17px;
}
/* Change background color of buttons on hover */
.tab button:hover {
background-color: #ddd;
}
/* Create an active/current tablink class */
.tab button.active {
background-color: #ccc;
}
/* Style the tab content */
.tabcontent {
display: none;
padding: 6px 12px;
border: 1px solid #ccc;
border-top: none;
}
/* Style the close button */
.topright {
float: right;
cursor: pointer;
font-size: 28px;
}
.topright:hover {color: red;}<div class="tab">
<button class="tablinks" onclick="toggleCity(event, 'London')" id="defaultOpen">London</button>
<button class="tablinks" onclick="toggleCity(event, 'Paris')">Paris</button>
<button class="tablinks" onclick="toggleCity(event, 'Tokyo')">Tokyo</button>
</div>
<div id="London" class="tabcontent">
<span onclick="toggleCity(event, 'London')" class="topright">×</span>
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<div id="Paris" class="tabcontent">
<span onclick="toggleCity(event, 'Paris')" class="topright">×</span>
<h3>Paris</h3>
<p>Paris is the capital of France.</p>
</div>
<div id="Tokyo" class="tabcontent">
<span onclick="toggleCity(event, 'Tokyo')" class="topright">×</span>
<h3>Tokyo</h3>
<p>Tokyo is the capital of Japan.</p>
</div>