Text UtilitiesLesson 101Free preview

URL Parser

This lesson is part of Web Developer Tools · All levels

Summary

The URL parser breaks down the web address into easy-to-read parts, such as schema, host, port, path, query string, and fragment. By understanding these parts, you can take value parameters, check domains, or build links securely. Parser also helps to find errors such as unencoded spaces. Most languages provide built-in APIs so you don't have to cut strings manually.

Key points

The general structure: scheme://host:port/path?query#fragment
Query string contains a pair of key=value that is separated by an ampersand
Percent encoding like %20 represents a special character
Fragments after # are not sent to the server
Use API like new URL() instead of cutting the string itself

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