Regex Practice Lesson 1 of 14

Literal matching and .test()

A regex in JavaScript is written between slashes: /cat/ is a pattern, not a string. Most characters inside it are literals - they match themselves, letter for letter. Once you have a pattern, pattern.test(str) asks the simplest possible question: does this shape appear anywhere in str? It returns true or false - nothing else.

By default a match can happen anywhere in the string, not just at the start, and it's case-sensitive - /cat/ matches inside "concatenate" just as happily as inside "a cat sat", but never matches "CAT".

Your task: write hasCat(str), returning whether str contains the literal text "cat" anywhere, using a regex and .test().

You'll practice:

Writing a regex literal with /.../
Checking a match with .test()
Regex matches are case-sensitive and match anywhere by default

// Write hasCat(str): true if str contains "cat" anywhere.
function hasCat(str) {

}