To create a vertical tab menu with CSS and JavaScript, the code is as follows −
Example
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {
box-sizing: border-box
}
.tab {
float: left;
border: 1px solid blue;
background-color: black;
width: 20%;
height: 200px;
}
.tab button {
display: block;
background-color: inherit;
color: white;
padding: 22px 16px;
width: 100%;
border: none;
outline: none;
text-align: left;
cursor: pointer;
transition: 0.3s;
font-size: 17px;
}
.tab button:hover {
background-color: gray;
}
.tab button.active {
background-color: #006400;
}
.demo2 {
float: left;
padding: 0px 10px;
border: 1px solid;
width: 70%;
border-left: none;
height: 200px;
}
</style>
</head>
<body>
<h2>Examination</h2>
<p>Following is the exam information:</p>
<div class="tab">
<button class="demo" onclick="infofunc(event, 'dates')" id="current">Exam Dates</button>
<button class="demo" onclick="infofunc(event, 'centre')">Exam Centre</button>
</div>
<div id="dates" class="demo2">
<h3>Dates</h3>
<p>Exam date will be announced on 25th March.</p>
</div>
<div id="centre" class="demo2">
<h3>Centre</h3>
<p>Exam Centre will be announced on 30th March.</p>
</div>
<script>
function infofunc(e, info) {
var i, content, links;
content = document.getElementsByClassName("demo2");
for (i = 0; i < content.length; i++) {
content[i].style.display = "none";
}
links = document.getElementsByClassName("demo");
for (i = 0; i < links.length; i++) {
links[i].className = links[i].className.replace(" active", "");
}
document.getElementById(info).style.display = "block";
e.currentTarget.className += " active";
}
document.getElementById("current").click();
</script>
</body>
</html>Output
This will produce the following output −

Click on any of the tabs, let’s say “Exam Centre” −
