Attribute 1: name

Attribute 2: http-equiv

Text; pictures; hyperlinks; audio and video

Whether to interact with the server data

<h1></h1>~<h6></h6>

<p></p>Divide text into paragraphs with gaps

<br/>Wrap text without gaps

Bold: strong (more), b

Italics: em (more), i, cite

Superscript: sup

Subscript: sub

<hr/>

Function: Divide the structure to control the overall style of a certain block with CSS

<meta/>,<link/>,<br/>,<hr/>,<img/>,<input/>

block element

inline elements

Space, one Chinese character is approximately equal to 3 spaces

" ""

1.jpg: Display colorful and high-quality pictures. Transparency is not supported.

2.png: Display colorful and high-quality pictures. It is a lossless format that can be compressed losslessly to ensure page opening speed. It is not suitable for storing colorful pictures.

3.gif: animated picture. Pictures are the worst.

1. Not suitable for displaying colorful pictures.

2. Composition unit: It is a "mathematical vector"

3. Not affected by resolution, there will be no distortion when the picture is enlarged

Can be linked externally/internally (relatively). <a href="Link address">Text or image</a>

_blank: Open the link in a new window. <a href="" target="_blank"></a>

name is easy to distinguish: <form name="myForm"></form>

method specifies which http submission method to use for form data. Post is generally used for better security: <form method="post"></form>

action specifies the address to which form data is submitted for processing: <form action="index.php"></form>

target specifies how to open the window, usually _blank: <form target="_blank"></form>

7.3.1 Single-line text box

7.3.2 Password text box

7.3.7 Multi-line text box

<input type="radio" name="Group name" value="Value" />

Attributes

<input type="checkbox" name="Group name" value="Value" />

Attributes

7.3.5.1 Ordinary buttons (cooperate with js to perform various operations)

7.3.5.2 Submit button (submit data to the server)

7.3.5.3 Reset button (clears the content entered by the user in the form)

7.3.5.4Button label (not easy to use)

<input type="file" />

<select> <option>Option content 1</option> </select>

select attribute

option attribute