How to chain functions without using prototype?

Question

I have a bunch of useful functions that I have collected during my whole life.

function one(num){
    return num+1;
}

function two(num){
    return num+2;
}         


        

Answer 1

In order to avoid having to call toValue at the end of the chain as in @Bergi's solution, you can use a function with attached methods. JS will call toValue automatically when trying to convert to it a primitive type.

function MyNumber(n) {
    function x () { }
    x.one = function() { n++; return this; };
    x.valueOf = function() { return n; };
    return x;
}

Then,

MyNumber(5).one().one()
> 7