Processing url parameters...

params.js

var Parameter = function (name /* , value* */) {
	this.name = name;
	this.values = [].slice.call(arguments, 1);
};

Parameter.prototype.toString = function () {
	return this.values.map(function (value) {
		return this.name + '=' + value;
	}.bind(this)).join('&');
};

var Search = function (/* parameter* */) {
	this.parameters = [].slice.call(arguments);
};

Search.prototype.toString = function () {
	return this.parameters.join('&');
};

Search.prototype.toJSON = function () {
	return this.parameters;
};

var p1 = new Parameter('fruit', 'apple', 'banana', 'pear');
var p2 = new Parameter('car', 'camry', 'focus');
var p3 = new Parameter('cat', 'lion');
var search = new Search(p1, p2, p3);

console.log(search);