[small knowledge Point] absolute path and relative path.

1, absolute path and relative path:
The 1.1 path is divided into two types
First Type: absolute path
(1) The full path of the file ,
For example: file:///C:/Users/asus/Desktop/1018/day01/code/image label. html

Second type: relative path (* * * * *)
(1) Location of a file relative to another file
The first case: Pictures and HTML files under a folder
(1) write the name of the picture directly in HTML

Second case: Picture in the lower directory of HTML
(1) write out the full path of the HTML and the full path of the picture
Html:c:\users\asus\desktop\1018\day01\code\ a.html
Image: C:\Users\asus\Desktop\1018\day01\code\ img\w01.png

= W01.png in the lower directory of code in the directory where a.html is located
=

Third case: Pictures in the upper-level directory of HTML
Html:c:\users\asus\desktop\1018\day01\ code\a.html
Image: C:\Users\asus\Desktop\1018\day01\ c.png
= c.png The upper directory of code in the directory where a.html is located
= How to represent the upper-level directory: /
=
= .. /.. /: Upper Layer

Later thought will add, knowledge points, although small, but still very easy to make mistakes, record here memo.

[small knowledge Point] absolute path and relative path.