HTML Attributes - SwatiMaurya08/html-notes GitHub Wiki
Attributes provide additional information about HTML elements.
HTML Attributes
- All HTML elements can have attributes.
- Attributes provide additional information about an element.
- Attributes are always specified in the start tag.
- Attributes usually come in name/value pairs like: name="value".
HTML links are defined with the <a>
tag. The link address is specified in the href attribute:
Example:
<a href="https://www.w3schools.com">`This is a link </a>
HTML images are defined with the <img>
tag.
The filename of the image source is specified in the src attribute:
Example:
<img src="img_girl.jpg">
HTML images also have width and height attributes, which specifies the width and height of the image:
Example:
<img src="img_girl.jpg" width="500" height="600">
The alt attribute specifies an alternative text to be used, if an image cannot be displayed.
The value of the alt attribute can be read by screen readers. This way, someone "listening" to the webpage, e.g. a vision impaired person, can "hear" the element.
Example:
<img src="img_girl.jpg" alt="Girl with a jacket">
The style attribute is used to specify the styling of an element, like color, font, size etc.
Example:
<p style="color:red">`This is a red paragraph.</p>
The language of the document can be declared in the <html>
tag.
The language is declared with the lang attribute.
Declaring a language is important for accessibility applications (screen readers) and search engines:
<!DOCTYPE html>
<html lang="en-US">
<body>
...
</body>
</html>
Here, a title attribute is added to the <p>
element. The value of the title attribute will be displayed as a tooltip when you mouse over the paragraph:
Example:
<p title="I'm a tooltip">
This is a paragraph.
</p>
Attributes and their Desciptions
-
alt - Specifies an alternative text for an image, when the image cannot be displayed.
-
disabled - Specifies that an input element should be disabled.
-
href - Specifies the URL (web address) for a link.
-
id - Specifies a unique id for an element.
-
src - Specifies the URL (web address) for an image.
-
style - Specifies an inline CSS style for an element.
-
title - Specifies extra information about an element.