JSFiddle - React, Tailwind, and code Playground

JavaScript

a1 = function(str) {
    return str.replace(new RegExp("[^a-zA-Z0-9\s]", "gi"), "");
}

a2 = function(str) {
	return str.replace(/[^a-zA-Z0-9\s]/gi, "");
}

var string = "abc abc";
console.log(a1(string));
console.log(a2(string));