URL Syntax and Name of Parts

Here is a visual review about URL parts.

http://www.example.com:80/a/b/c?x=1&y=2#xyz

protocol://domainName:portNumber/resourcePath?queryString#fragment

Protocol

Protocol specify a web protocol to use.

Sample values:

• http
• https
• ftp

[see HTTP Protocol Tutorial]

Host

Host specify a machine to connect to.

Sample value: www.example.com

The example.com is domain name. www is sub-domain.

Port Number

Port Number is a integer that is similar to a number of a street address.

• HTTP protocol default to port 80.
• HTTPS protocol default to port 443.

Resource Path

Path specifies a specific document.

Sample value: a/b/c

Query String

A list of key/value pairs, separated by & (U+26: AMPERSAND)

Sample value: x=1&y=2

URL Fragment

Used for jumping to specific section of current page. Value is typically alphanumeric.

Sample value: some