Function.prototype.method - The Good Parts

Function.prototype.method.js

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

// Add a method conditionally.
Function.prototype.method = function (name, func) {
	if (!this.prototype[name]) {
		this.prototype[name] = func;
	}
};

//EXAMPLES

Number.method('integer', function ( ) {
	return Math[this < 0 ? 'ceiling' : 'floor'](this);
});
document.writeln((-10 / 3).integer( )); // -3

//JavaScript lacks a method that removes spaces from the ends of a string. 
//That is an easy oversight to fix:
String.method('trim', function ( ) {
	return this.replace(/^\s+|\s+$/g, '');
});
document.writeln('"' + " neat ".trim( ) + '"');