HTML Attributes provide additional information about HTML elements.
The filename of the image source is specified in the
Example:
Example:
The value of the attribute can be read by screen readers. This way, someone "listening" to the webpage, e.g. a blind person, can "hear" the element.
Example:
Note:The
Example:
The language is declared with the
Declaring a language is important for accessibility applications (screen readers) and search engines:
Example:
Note:The first two letters specify the language (en). If there is a dialect, use two more letters (US).
Example:
The title attribute can be written with uppercase or lowercase like title or TITLE.
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"
The href Attribute
The href Attribute HTML links are defined with the tag. The link address is specified in the href attribute:
<a href="http://paul-html-tutorial.blogspot.com">This is a link</a>
The src Attribute
HTML images are defined with the<img> tag.The filename of the image source is specified in the
src attribute:Example:
<img src="paultutorial.jpg" alt="paultutorial.com" >
The width and height Attributes
Images in HTML have a set of size attributes, which specifies the width and height of the image:Example:
<img src="paultutorial.jpg" alt="paultutorial.com" width="104" height="142">
The alt Attribute
Thealt attribute specifies an alternative text to be used, when an
image cannot be displayed.The value of the attribute can be read by screen readers. This way, someone "listening" to the webpage, e.g. a blind person, can "hear" the element.
Example:
<img src="paultutorial.jpg" alt="paultutorial.com" >
Note:The
alt attribute is also useful if the image does not exist:The style Attribute
Thestyle attribute is used to specify the styling of an element, like color,
font, size etc.Example:
<p style="color:red">I am a paragraph</p>
The lang Attribute
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:
Example:
<!DOCTYPE html>
<html lang="en-US">
<body>
...
</body>
</html>
Note:The first two letters specify the language (en). If there is a dialect, use two more letters (US).
The title Attribute
Here, atitle 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:
<!DOCTYPE html>
<html lang="en-US">
<body>
<p title="I'm a tooltip">
This is a paragraph.
</p>
</body>
</html>
Suggest: Use Lowercase Attributes
The HTML5 standard does not require lowercase attribute names.The title attribute can be written with uppercase or lowercase like title or TITLE.
Summary
- All HTML elements can have attributes
- The
titleattribute provides additional "tool-tip" information - The
hrefattribute provides address information for links - The
widthandheightattributes provide size information for images - The
altattribute provides text for screen readers - we always use lowercase attribute names
- we always quote attribute values with double quotes
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