JavaScript allows us make new method available to a specific type. For example, we can augment Function.prototype with a new method like this:
Function.prototype.method = function(name, func){
this.prototype[name] = func;
return this;
};Morever, we can augment a specific type with a new method like this:
Number.method('integer', function(){
return Math[this < 0 ? 'ceiling' : 'floor'](this);
});
document.writeln((-10/3).integer())This method help us convert a Number type to integer.