DevGuru HTML core attribute: id

CORE ATTRIBUTE: id

id="name"
Available in versions: 4.0
HTML 4.0 tag compatibility: All tags except base, head, html, meta, script, style, title

The id core attribute is used to assign a name or id to a tag. This id must be unique within the document and can only be assigned to one use of a tag.

Because it is unique, the name of the id can be the target of a URL or used to define a style rule.

The use of id does not effect the output in any manner.

Code:
<input type="checkbox" id="ckbx1">
<input type="checkbox" id="ckbx2">

Output: