JavaScript element.className Property
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JavaScript element.className Property
The element.className property gets and sets the value of the class attribute of the specified element.
Note: The name className is used for this property instead of class because of conflicts with the "class" keyword in many languages which are used to manipulate the DOM.
Get the Class Name
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<head>
<style>
.one{
color: red
}
</style>
</head>
<body>
<p class="one">Click on the button</p>
<button onclick="myFunction()">Click Me</button>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var elem = document.getElementsByTagName("p")[0];
function myFunction(){
x.innerHTML = elem.className;
}
</script>
</body>
</html>
Syntax
element.className
Return Values
| Value | Explanation |
|---|---|
| String | Returns the class Names of the given element. |
Set the Class Name
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<head>
<style>
.one{
color: red
}
</style>
</head>
<body>
<p>Click on the button</p>
<button onclick="myFunction()">Click Me</button>
<script>
var elem = document.getElementsByTagName("p")[0];
function myFunction(){
elem.className = "one";
}
</script>
</body>
</html>
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