JavaScript Classical Inheritance #1

js_classical_inheritance_01__person_olympian

var Person = function( name ) {
    this.name = name;
};

Person.prototype.hello = function() {
    console.log( this.name + ' says hello!' );
};

Person.prototype.walk = function( distance ) {
    console.log( this.name + ' walked ' + distance + ' steps' );
};

Person.prototype.run = function( mph, distance ) {
    console.log( this.name + ' ran ' + distance + ' steps at ' + mph + ' mph' );
};


var Olympian = function( name ) {
    Person.call( this, name );
};

Olympian.prototype = Object.create( Person.prototype );
Olympian.prototype.constructor = Olympian;

Olympian.prototype.jump = function( height ) {
    console.log( this.name + ' jumped ' + height + ' feet' );
};

Olympian.prototype.run = function( mph, distance ) {
    Person.prototype.run.call( this, (mph * 3), (distance * 3) );
};


var person = new Person( 'Alpha' );
person.hello();
person.walk( 20 );
person.run( 5, 100 );

var olympian = new Olympian( 'Beta' );
olympian.hello();
olympian.walk( 20 );
olympian.run( 10, 100 );
olympian.jump( 50 );