Attributes

Attributes can be added to the opening tag of an HTML element to change its default behavior or provide additional data about it.

Attributes consist of a name and a value in the format name="value":

<tag name="value"></tag>

So for example, the <img> image element has a mandatory src attribute that contains the image file path/URL:

<img src="codecademy_logo.png" />

• src is the attribute name.
• codecademy_logo.png is the attribute value.

HTML elements can have any number of attributes.

The example below displays an image element with three attributes:

<img src="nyan_cat.gif" width="500" height="600" />

These declare its source, width, and height.

Note: Attribute names are not case-sensitive, but it is good practice to write HTML markup in lowercase.