JSFiddle - React, Tailwind, and code Playground

by Oleg Lazarev

JavaScript

const regex = /^[^a]$/u;
console.log(
	regex.test('a'), // false
	regex.test('b'), // true
	regex.test('☃'), // true
	regex.test('𝌆'), // true
	regex.test('💩')  // true
);