[Regex Expression] Use Shorthand to Find Common Sets of Characters

var str = `Afewserg, %8392 ?AWE`;

var regex = /[a-zA-Z0-9]/g; 
// the same as:
var regex = /\w/g;

// Find anything but not the a-zA-Z0-9
var regex = /[^a-zA-Z0-9]/g;
// the same as
var regex = /\W/g;

var regex = /[0-9]/g;
// the same as:
var regex = /\d/g;

// Find anything but not the 0-9
var regex = /[^0-9]/g;
// the same as
var regex = /\D/g;

var regex = /\s/g; // match all the space 

// Find anything but not the space
var regex = /[^\s]/g; 
// the same as:
var regex = /\S/g;