How to make my own javascript Math method working?

Question

In javascript when I create this function it does what can be expected :

Number.prototype.powown = function(b) {
    return Math.pow(this, b);
}
var a = 3;
var b = 6;
document.write(a.powown(b));

But I want to have it working without the use of variables, I can't figure out how this works.

I would like to make it work when I give this code :

document.write(Math.powown(3,6));

Answer 1

since Math object already have Math.pow() you could directly use it, in case you want to add custom functions , you could add custom function to Math object, for example:

Math.powown = function() {
  return Math.pow(arguments[0], arguments[1]);
};
console.log(Math.powown(2,2)); //gives 4

Answer 2

I think what you are trying to do is this

Number.prototype.pow = function(a){ return Math.pow(this, a); }

So you can then call it like this

(10).pow(5);

or this

10..pow(5);

Note: You wont be able to call 10.pow(5) the parenthesis or . are required for javascript to know 10 is Number

Bonus: If you wanted to get really silly you could apply all the methods of Math to the prototype of Number like this.

Object.getOwnPropertyNames(Math).forEach(function(p){
    Number.prototype[p] = function(){
        return Math[p].apply(null, Array.prototype.concat.apply([this], arguments));
    }
});