JSFiddle - React, Tailwind, and code Playground
by S S
JavaScript
const regex = /^[+?\d]+$/;
const res1 = regex.test('123');
const res2 = regex.test('+45');
console.log(res1, res2); // true true
const wrongUsage = '12312312' === /^[+?\d]+$/
console.log(wrongUsage); // false