Web Designer, Web Development Information
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<!DOCTYPE
html>
<html>
<body>
<h2>Using
The class Attribute in JavaScript</h2>
<p>Click
the button, to hide all elements with the class name "city", with
JavaScript:</p>
<button
onclick="myFunction()">Hide elements</button>
<h2
class="city">Delhi</h2>
<p>Delhi is the capital of India.</p>
<h2
class="city">Kathmandu</h2>
<p>Kathmandu is the capital of Nepal.</p>
<h2
class="city">Dhaka</h2>
<p>Dhaka is the capital of Bangladesh.</p>
<script>
function
myFunction() {
var x =
document.getElementsByClassName("city");
for (var i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
}
</script>
</body>
</html>
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<!DOCTYPE
html>
<html>
<head>
<style>
.cities
{
background-color:
black;
color:
white;
margin:20px;
padding:20px;
}
</style>
</head>
<body>
<div
class="cities">
<h2>Delhi</h2>
<p>
Delhi is the captical of India</p>
</div>
<div
class="cities">
<h2>Kathmandu</h2>
<p>
Kathmandu is the captical of Nepal</p>
</div>
<div
class="cities">
<h2>Dhaka</h2>
<p>
Dhaka is the captical of Bangladesh</p>
</div>
</body>
</html>
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<!DOCTYPE
html>
<html>
<head>
<style>
.headings {
color: Tomato;
font-family: Verdana;
background-color: black;
}
</style>
</head>
<body>
<h1
class="headings">This is first Heading</h1>
<h2
class="headings">This is first Heading</h2>
<h3
class="headings">This is first Heading</h3>
<h4
class="headings">This is first Heading</h4>
</body>
</html>
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