Regular Expressions: The Unseen Force

Regular expressions are like ninjas. They're sneaky, they're stealthy, and they're always watching you. But don't let that scare you, because we're here to teach you the ways of the regex.

Below, we'll explore the basics of regex, from matching patterns to grouping and repetition. But be warned, once you start down this path, there's no turning back.

				`/hello world/`  // Matches the string "hello world"
				`hello \w+ world/`  // Matches the string "hello world", but only if "world" is a single word
				`^hello world$`  // Matches the string "hello world", but only if it's at the start and end of the line
				`/hello (world|foo)/`  // Matches the string "hello world" or "hello foo"
				`/hello (\w+) world/`  // Matches the string "hello  world", where  is a single word
See More Examples