The role of HTML attributes (code)-HTML Tutorial-php.cn

The role of HTML attributes (code)

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Release： 2019-08-21 15:31:23

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Attributes provide additional information to HTML elements.

The role of HTML attributes (code)

HTML attributes(Recommended learning: HTML introductory tutorial)

HTML tags can be owned Attributes. Attributes provide more information about HTML elements.

Attributes always appear in the form of name/value pairs, such as: name="value".

Attributes are always specified in the opening tag of an HTML element.

Attribute Example

HTML links are defined by the tag. The address of the link is specified in the href attribute:

<html>
<body>

<a href="http://www.w3school.com.cn">
This is a link</a>

</body>
</html>

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HTML Tip: Use lowercase attributes

Attributes and attribute values are not case sensitive.

However, the World Wide Web Consortium recommends lowercase attribute/attribute values in its HTML 4 recommendations.

The new version of (X)HTML requires the use of lowercase attributes.

Always enclose attribute values in quotes

Attribute values should always be enclosed in quotes. Double quotes are the most commonly used, but there is no problem using single quotes.

In some individual cases, such as the attribute value itself contains double quotes, you must use single quotes, for example:

name='Bill "HelloWorld" Gates'

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The following is a list of values that apply to most HTML elements Properties:

##classclassnameSpecifies the class name of the element idid Specifies the unique id of the elementstylestyle_definitionSpecifies the inline style of the element titletext Specifies additional information about the element (can be displayed in a tooltip)

Property	Value	Description

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