Remove special characters using a Regex in JavaScript

Imagine you have some strings and as a requirement of one your clients, you need to clean the strings by deleting all the special characters, so here are two regular expressions that could help you to start your cleaning, of course, the second one is more personalizable, but, be my guest and choose the one you want or need:

var sourceString = "¿Sabes qué es WEBTRAINING.mx? >> te esperamos MAÑANA martes 12 de JUNIO 9.30am en http://webtraining.mx/";
// Example with \w
var resultingString = sourceString.replace(/[^\w\s]/gi, '');

// Example listing the specific chars we want to delete
var r = sourceString.replace(/[`~!@#$%^&*()_|+\-=÷¿?;:'",.<>\{\}\[\]\\\/]/gi, '');