Extending Number.prototype in javascript and the Math object?

Question

I\'ve always wondered why Javascript has the global Math object instead of giving numbers their own methods. Is there a good reason for it?

Also are there any drawbacks

Answer 1

You can do this

Number.prototype.round = function() {
    return Math.round(this.valueOf());
};

https://www.w3schools.com/jsref/jsref_prototype_num.asp