Adding modifiers to an existing regular expression

Question

I have a bunch of regular expressions like lower = /[a-z]/ Later in my program i need to use this as /[a-z]/g ie. i need to add the \'global\' modifier later. So how to

Answer 1

You can write a method for it-

RegExp.prototype.reflag= function(flags){
    return RegExp(this.source, flags);
}