The URI generic syntax consists of a hierarchical sequence of five components
URI = scheme ":" ["//" authority] path ["?" query] ["#" fragment]
authority = [userinfo "@"] host [":" port]
? query component
| Query delimiter | Example |
|---|---|
Ampersand (&) |
key1=value1&key2=value2 |
Semicolon (;) |
key1=value1;key2=value2 |
scheme是http, https, ftp 这种
https://www.youtube.com/watch?v=-ykeT6kk4bk
?query key-value pairs
Internet Tips: UNderstanding URLs
The basic parts of a URL, including the scheme, domain name, file path, parameters, and anchor
URL:Uniform Resource Locator 统一资源定位符 like a street address
scheme: HTTP HTTPS(extra security)
domain name:
subdomain: www/accounts
top-level domain: .com
educational institutions
organizations
government sites
country
file path
parameter string: ?query key value paris
anchor # 在页面定位
参考：
