id Attribute

id attribute defines a unique id for an element. id attribute can be used on any HTML element. It is a global attribute.

Example:

<!DOCTYPE html>
<html>
<head>
<title> Page Title </title>
</head>
<body>
<h1> This is id attribute example. </h1>
<h1 id="unique"> id attribute </h1>
</body>
</html>

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Browser Support

Attribute	Firefox	Chrome	IE	Opera	Safari
id	yes	yes	yes	yes	yes

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id Attribute

Example:

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