HTML attributes are special words used inside the opening tag to control the element's behaviour.
HTML attributes are a modifier of an HTML element type. An attribute either modifies the default
functionality of an element type or provides functionality to certain element types unable to
function correctly without them. In HTML syntax, an attribute is added to an HTML start tag.
Several basic attributes types have been recognized, including: required attributes, needed by a particular element type for that element type to function correctly; optional attributes, used to modify the default functionality of an element type; standard attributes, supported by many element types; and event attributes, used to cause element types to specify scripts to be run under specific circumstances.
Some attribute types function differently when used to modify different element types. For example, the attribute name is used by several element types, but has slightly different functions in each.
1. The href attribute
- anchor tag defines a hyperlink, which is used to link from one page to another
- href is a mandatory attribute which indicates the link's destination.
2. The src attribute
- src attribute is to specify a URI for an external file or resource.
- HTML src attribute supports frame, iframe, img, input and script elements.
3. The Width & Height attribute
- src is a mandatory attribute which tells the browser the path of the image.
- width is an optional attribute to tell the browser about the width size of the image.
- height is an optional attribute to tell the browser about the heightsize of the image.
4. The Style attribute
- The style attribute specifies an inline style for an element.
- The style attribute can be used on any HTML element.