Summary of common HTML attribute knowledge points

This time I will bring you a summary of common HTML attribute knowledge points. What are the precautions when using common HTML attributes? The following is a practical case, let’s take a look.

In HTML, attributes are also more important for the entire HTML content. So how much do you know about HTML attributes? What are the attributes of HTML? The following article will give you a detailed introduction to the properties of HTML.

Definition:

HTML attributes: additional information provided by HTML elements

Simple understanding of HTML attributes:

1.HTML elements can set attributes

2. Attributes can add additional information to elements

3. General description and start tag of attributes

4. Attributes always appear in the form of names or value pairs, for example: name: "value"

Simple example to understand attributes:

a link

HTML links are defined by the tag, and the link's address is specified in the href attribute.

HTML common reference attribute values:

Property values ​​should always be enclosed in quotes.

Double quotes are the most commonly used, but there is no problem using single quotes.

Note: In some individual cases, such as the attribute value itself contains double quotes, you must use single quotes, for example: name='John "ShotGun" Nelson'

HTML Tip: Use lowercase attributes

Properties and property values ​​are not case-sensitive.

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

Newer versions of (X)HTML require lowercase attributes.

HTML Attributes Reference Manual

Label

describe

Define comments

Define document type

Define hypertext links

Define abbreviation

The definition only takes the first letter of the abbreviation, and does not support HTML5

Defines the contact information for the document author or owner

Deprecated in HTML5. Define embedded applets.

Define the area inside the image map

（New）

Define an article area

（New）

Define the sidebar content of the page

Define audio content

Define text bold

Defines the default address or default target for all links in the page.

HTML5 is not supported and deprecated. Define the default font, color, or size for text on the page.

（New）

Allows you to set a piece of text independent of the text direction setting of its parent element.

Define text direction

Define large text, HTML5 does not support

Define long references

Define the body of the document

Define newline

Define a click button

（New）

To define graphics, such as charts and other images, labels are just graphics containers and you must use scripts to draw the graphics

Define table title

HTML5 is not supported and deprecated. Define centered text.

Define citation

Define computer code text

Define attribute values ​​for one or more columns in the table

Define column groups in the table for formatting

（New）

Define command buttons, such as radio buttons, checkboxes or buttons

Define a list of options. Use this element in conjunction with an input element to define the possible values ​​of the input.

Define the description of the item in the definition list

Define deleted text

（New）

Details used to describe a document or part of a document

Definition definition project

Define dialog boxes, such as prompt boxes

HTML5 is not supported and deprecated. Define directory listing.

Define sections in the document

Definition list details

Define items in list

Define emphasis text

（New）

Define embedded content, such as plug-ins.

Define the border around elements in the form

Define the title of the

element

（New）

Specify individual stream content (images, charts, photos, code, etc.).

HTML5 is not supported and deprecated. Define the font, size and color of the text.

（New）

Defines the footer of a section or document.

Form that defines the HTML document

Define the window or frame of the frameset

Define frameset

to

Define HTML title

Define information about the document

（New）

Defines the header area of ​​the document

---

Define horizontal line

Define HTML document

Define italics

Define inline frames

Define image

Define input controls

Definition of inserted text

Define keyboard text

（New）

Specifies the key pair generator field to use on the form.

Define the annotation of the input element

Defines the title of the fieldset element.

Define the items of the list

Define the relationship between documents and external resources

Define image mapping

（New）

Defines text with tokens. Please use the tag when you need to highlight text.

Deprecated. Define menu list.

Defines meta-information about the HTML document.

（New）

Define weights and measures. Use only for measurements with known maximum and minimum values.

（New）

Define the section of the navigation link

Define alternative content for users who don't support the framework. HTML5 is not supported

Define alternative content for users who do not support client-side scripting.

Define embedded objects

Define an ordered list.

Defines a combination of related options in a selection list.

Define the options in the selection list.

（New）

Define different types of output, such as script output.

Define paragraph.

Define the parameters of the object.

Define preformatted text.

（New）

Define the running progress (process).

Define short quotes.

（New）

The tag is used in Ruby comments to define what is displayed by browsers that do not support Ruby elements.

（New）

tag defines the interpretation or pronunciation of a character (Chinese pinyin or character).

（New）

tag defines ruby ​​comments (Chinese pinyin or characters).

Deprecated. Defines strikethrough text.

Define computer code samples.

<script> </script>

Define client script.

（New）

The

tag defines a section (section, section) in the document. Such as chapters, headers, footers, or other parts of the document.

Define a selection list (Drop-down list).

Define small text.

（New）

The tag defines media resources for media elements such as

Define sections in the document.

HTML5 is not supported and deprecated. Defines strikethrough text.

Define emphasis text.

Define the style information of the document.

Define subscript text.

The

Define superscript text.

Define the table.
Define the main content in the table.
		Define the cells in the table.
	Define a multi-line text input control.
Define the content of table notes (footnotes) in the table.
		Define the header cell in the table.
Define header content in the table.
（New）	Define the date or time, or both.
	Defines the title of the document.
Define the rows in the table.
（New）	The tag specifies an external text track for media such as a video element.
	Define typewriter text.
	Deprecated. Defines underlined text.
	Define an unordered list.
	Defines the variable portion of the text.
	The
（New）	Specifies where in the text it is appropriate to add line breaks.

Global properties

appears.

Attributes	describe
accesskey	Sets the keyboard shortcut for accessing an element.
class	Specifies the classname of the element
contenteditable(New)	Specifies whether the element's content can be edited.
contextmenu（New）	Specifies an element's context menu. When the user right-clicks the element, the context menu
data-*（New）	Used to store custom data for the page
dir	Sets the text direction of the content within the element.
draggable（New）	Specify whether an element can be dragged
dropzone（New）	Specify whether data will be copied, moved, linked, or deleted
hidden（New）	The hidden attribute specifies that the element is hidden.
id	Specifies the unique id of the element
lang	Sets the language code for the content within the element.
spellcheck（New）	Detect if an element is misspelled
style	Specify the inline style of the element
tabindex	Sets the tab order of elements.
title	Specifies additional information for the element (can be displayed in a tooltip)
translate（New）	Specifies whether an element's value needs to be translated when the page loads

# I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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