Javascript

javascrpit-function.js

Function.prototype.method = function(name, func) {
    if(!this.prototype[name]) {
        this.prototype[name] = func;
    }
    return this;
};

Number.method('integer', function() {
   return Math[this < 0 ? 'ceil' : 'floor'](this); 
});

document.writeln((-10/3).integer());