html introductory tutorial, quick mastery of html markup symbols_HTML/Xhtml_web page production

Extrascript
If you know nothing about html and are still worried about how to get started with html, the author highly recommends that you study this article, which will help you quickly master html. If you are already an html expert Expert, I hope you can give me better suggestions.

Summary
HTML, commonly known as Hyper Text Markup Language, is the abbreviation of Hyper Text Markup Language and is a markup language used to describe web page documents. The web page file itself is just a text file. By adding mark symbols to the text file, we can tell the browser how to display the content (such as how to process text, how to arrange pictures, how to display pictures, etc.). These mark symbols are what we html, when we learn html, we learn these mark symbols. Today we will mainly learn some common html mark symbols, also called html elements,

Tag element
Tag introductionhtml element includes an inclusive range defined by one or a pair of tags. The label is composed of two strings "
". The label includes the start tag "" and the end tag "". >html tag elements have four forms:
Empty element:

Empty element with attributes:
Element with content:
This is the content Elements with content and attributes:
This is the content One thing to say here is that in HTML documents, the names of tags and attributes have nothing to do with size.


The essential basic elements of the HTML framework
represents the beginning of the document and the end of the document
represents the beginning of the document header and end

represents the beginning and end of the body of the document html comment
format is less than sign (
). For example:


Tags related to paragraph control
Create a paragraph. The attribute align indicates the alignment of the paragraph. # can be left, center, right, justify.


The function is to wrap the line

The function is to insert a horizontal line, and the attribute color is used to represent the color.


Tag related to text display
… Center the text to display

The function is to express The title of the document, n is an integer from 1 to 6, once is the maximum title, 6 is the minimum title, align is to set the title alignment, including left, center, right

... Set the font, size is the font size, an integer from 1 to 7, the larger the number, the larger the font.

... Make the text bold.

… Make text italic


Tags created by list elements a. Create a numbered list:

...

Use the start attribute to set the starting sequence number.

...

Use the value attribute to change the sequence of numbers in the list.

b. Create a list with items matching:

and

. The type attribute of their tags specifies the style of the symbol:
• disc, displayed as a filled circle;
  square, Shows unfilled squares.
  circle, displays unhollowed circles
  b. Create unsigned lists
  
  and

  tags to create unsigned lists

  
  and

  , create indents List of

  
  
  Tags for table elements The role of tables in web page layout is crucial. Tables are defined with
  , and specific definitions For:
  The border attribute is used to define the width of the table border, and the align attribute is used to set the alignment of the table, which can be left, right, or center. bgcolor is color.
  
  …
  …Add new rows to the table
  …
  …
  
  html interactive form The form is mainly responsible for the data collection function in the web page, such as our usual registration information and input information All that can interact with web pages are forms. The
  form is created using the
  ... elements. By embedding other related elements or controls between the two, you can create a form as part of the html document. The basic syntax for creating a form is as follows:
  
  …. The attribute method is used to specify the HTTP method used when sending form data to the server. You can use get or post to submit. The data is appended to the end of the URL and sent to the server as part of the URL.
  The following are some commonly used elements about forms: The
  
  element is used to receive information entered by the user. It is an empty element with attributes. The syntax used to create controls in the form is
  
  List box element
  Allows the user to select one or more items from a drop-down menu, list box Created by the element, each option in the list box is provided using the element.
  Multi-line text input control
  …
  The attribute rows is used to specify the number of text lines displayed in the visual area of ​​the text box input control, and cols specifies the width displayed in the visual area of ​​the text input control .
  
  Hyperlink tag
  …
  The attribute href is used to specify the target of the link. The target address has URL positioning, in the opening tag will be used as the link text displayed in the browser.
  
  Embedded image tag
  The attribute src specifies the location of the image resource, and the attributes width and height are used to specify the size of the image. It should be noted here that src should be used as much as possible Relative paths instead of absolute paths. Special character elements
  Special characters include character references and entity references. Below we will summarize the commonly used ones
  
  
  
  Summary We will summarize these The most commonly used and basic tag elements are summarized. Once you master these basics, you can quickly become a junior HTML person. Writing a simple HTML web page is not a problem. This also lays the foundation for further learning in the future. Base.

  Used to define the header of the table

  Used to define the table header	is used to define cells