What does id mean in html

In HTML, id is the abbreviation of "Identity document", which means "identity identification number". This attribute is used to specify the unique id of the element. This attribute can be used as a link anchor, through JavaScript or through CSS changes or adds styles to elements with specified ids.

The operating environment of this tutorial: Windows 10 system, HTML5 version, Dell G3 computer.

What does id mean in html

The id attribute specifies the unique id of the HTML element.

id must be unique within the HTML document.

The id attribute can be used as a link anchor to change or add styles to an element with a specified id via JavaScript (HTML DOM) or via CSS.

Differences between HTML 4.01 and HTML5

In HTML5, the id attribute can be used on any HTML element (it will validate any HTML element. But it is not necessarily useful).

In HTML 4.01, the id attribute cannot be used for:,

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