Five specifications of html

The opening tag and closing tag of an html file

• and

html contains two parts of content
##
• Set related information
  
  
  ##
The content displayed on the page is written in the body

• html tags are in pairs

• html code is not case-sensitive

• Some tags end within the tag. For example, line break:

  
  
Separation line:

• ---

  ##Form tag

• ##

  and

• Get request address bar will carry the submitted data, post will not carry it

Get request security level is low , post is higher
Get request data size limit, post has no limit
There are two commonly used get and post. The default get is get. Request
action: submit to the address, default to the current page
method: form submission method
enctype: This attribute is not required for general requests. You need to set this attribute when uploading files.
Interview question: The difference between get and post
• Input items: You can enter content and select parts of the content

• Normal input items:

• Password input item:

• ##Single choice Input item:

  -> The attribute name is required inside

  -> The attribute values ​​of name must be the same
-> There must be a value

• Check input item:
  
  
  -> The attribute name is required inside

  -> The attribute values ​​of name must be the same
-> There must be a value

• File input item (used when uploading later)
  ->
  
  

• ##Drop-down input item (not in the input tag)

  
  

  
      请选择
      1991
      1992
      1993
      1994
  

  Copy after login
  Text field

• 
  

  Copy after login

• Hidden items (will not be displayed on the page, but exist in the html code )

  
  

Copy after login
• Submit button

  
  

Copy after login
• Submit using image

  
  

Copy after login
• Most input items use

  
  

• Use of other common tags in html

b
– bold

• s

  – strikethrough

• u

  – underline

## i
• – Italic

pre
• – Output

sub
• and ## as is #sup

  – subscript and superscript

• div – Automatic line wrapping

• span – Display

## on one line

• html consists of two parts: head and body

• You can use the link tag to introduce css files

• You can uniformly set the opening method of hyperlinks

  – Set the full-text hyperlink to open in a new window

• – Previous search engine retrieval method

• – Three seconds jump

• Tags in the head It is the header tag

• title tag: indicates the content displayed on the tag

• tag: sets some related content of the page

• base tag: set the basic settings of the hyperlink

• link tag: introduce external files

• ##

  Tag

rows: Divide by row
cols: Divide by columns

• tag

##

• Specific displayed page

The above is the detailed content of JavaWeb's detailed introduction to basic learning of html. For more information, please follow other related articles on the PHP Chinese website!