1. Front-end: Adaptation to different devices
Display--> Performance optimization
Certain computing tasks
html5
2. xml: Transfer data and save configuration file
3. garbled code is because The encoding method is different from the decoding method
4. For specific usage of html specific tags (attributes), please refer to the help manual
Typesetting tags
,
,
,
Font tags , , special characters  ;
Image tag
Attributes and parameters
List tag
-
Hyperlinks
Table mark
attribute title, cell merge Frame tags