HTML id Attribute

HTML id Attribute

The id attribute defines a unique identifier (ID) which must be unique in the whole document.

Its purpose is to identify the element when scripting (JavaScript) or styling (CSS).

Note: The id is a global attribute and is common to all HTML elements; they can be used on all elements, though they may have no effect on some elements.

Example

HTML Online Editor
<!DOCTYPE html> <html> <head> <style> #myH3{ color:red; } #myP{ color:green; } </style> </head> <body> <h3 id="myH3">Heading</h3> <p id="myP">Paragraph</p> </body> </html>

Attribute Value

ValueExplanation
nameSpecifies a unique id for an element.

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