Free collection of beautiful vector icons for your web pages.

Lesson 1.7. ID attribute in HTML tags

Syntax

HTML tags can contain attributes that are tag related information or properties. The general attribute syntax is:

<div attribute_name = "Property1 Property2 "></div>

Each tag has its own attributes, for example the tag <a> is generaly combined with the attribute href =" ... " which creates a link to another page.

You'll learn later that it is possible to create custom attributes for your own needs.

The ID attribute

The most used attribute is id which identifies a tag in particular. The following example shows the syntax for associating an identifier to a tag <h1>:

<h1 id="ID_name">My title</h1>

However, the following constraints should be considered:

The identifier must be unique throughout the document. You should never have two tags with the same identifier.
The name of the identifiers must never contain space, tab or special characters such as accents.
HTML 5 accepts dashes - and _ but compatibility is not ensured with previous versions. These characters tend nowaday to be democratize.

Lesson 1.6 Summary Lesson 1.8

Lesson 1.7. ID attribute in HTML tags

Syntax

The ID attribute

See also