下面的示例有一个名为London的选项卡，其中有另一个名为Paris的选项卡。我怎么能在伦敦不结帐的情况下打开巴黎？
该示例直接来自W3SCHOOL,但经过了一些修改以适应我的用例。
null
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {font-family: Arial;}
/* 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>
</head>
<body>
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'London')">London</button>
</div>
<div id="London" class="tabcontent">
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
</div>
<div id="Paris" class="tabcontent" >
<h3>Paris</h3>
<p>Paris is the capital of France.</p>
</div>
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<script>
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";
}
</script>
</body>
</html> null
我相信问题是，“活跃”班从伦敦消失，因此，一旦我向巴黎施压，就会关闭。但我不擅长jQuery。
我想它可以很容易地在W3接口上测试:https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_tabs
您希望根据.tabcontent元素集合是否与目标选项卡共享同一父元素来筛选它们。
我还稍微重构了代码的一些其他部分，请比较一下，这些变化是不言自明的。
null
function openCity(evt, cityName) {
let i, tabcontent, tablinks;
const targetTab = document.querySelector(`#${cityName}.tabcontent`);
tabcontent = [...document.getElementsByClassName("tabcontent")].filter(el => el.parentElement === targetTab.parentElement);
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].hidden = true;
}
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].classList.remove("active");
}
targetTab.style.display = "block";
evt.currentTarget.classList.add("active");
}body {
font-family: Arial;
}
/* 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;
}<div class="tab">
<button class="tablinks" onclick="openCity(event, 'London')">London</button>
</div>
<div id="London" class="tabcontent">
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
</div>
<div id="Paris" class="tabcontent">
<h3>Paris</h3>
<p>Paris is the capital of France.</p>
</div>
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>