The function and usage of

HTML tag
Definition and usage
The pre element can define pre-formatted text. Text enclosed in a pre element usually preserves whitespace and newlines. The text will also be rendered in a fixed-width font. A common application of the

tag is to represent computer source code.

Tags that can cause paragraph breaks (such as headings,

, and

tags) must not be included in blocks defined by . Although some browsers will interpret the paragraph end tag as a simple line break, this behavior is not the same in all browsers. Allowed text in pre elements can include physical styles and content-based style variations, as well as links, images, and horizontal dividers. When placing other tags (such as the ) inside the block, place them just like any other part of the HTML/XHTML document.

Tips and
Comments
Tip: The tab character (tab) can play its due role in the block defined by the label. Each tab character occupies 8 characters. Location. However, we don't recommend using it because the implementation of Tab varies in different browsers. Using whitespace in document sections formatted with the tag ensures correct horizontal positioning of the text.
Tip: If you want to use tags to define computer source code, such as HTML source code, please use symbol entities to represent
special characters
, such as '' represents '>', '&' represents '&'. Differences between HTML and XHTML
In HTML 4.01, the 'width'
attribute of the pre element is deprecated.
In XHTML 1.0 Strict DTD, the 'width' attribute of the pre element is not supported
The pre tag is suitable for displaying computer code:

for i = 1 to 10 
print i 
next i

HTML Tag

Definition and usage

Tags are used to represent computer source code or other text content that can be read by machines.

Writers of software code have become accustomed to a particular style of textual representation when writing source code. The label is designed for them. The text contained within this label will be displayed in a fixed-width, teletype-style font (Courier).

The tag should only be used on content that represents computer program source code or other machine-readable text. Although the tag usually just changes the text to a fixed-width font, it implies that the text is source code. Future browsers may add other display effects. For example, the programmer's browser may look for fragments and perform some additional text formatting, such as special indentation of
loops
and conditional
judgment statements, etc.                                                                            

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