Get Programming with JavaScript

Get Programming with JavaScript - Listing 9.04

Listing 9.04 - A Planet constructor

var Planet = function (name, position, type) {
    this.name = name;
    this.position = position;
    this.type = type;

    this.showPlanet = function () {
        var info = this.name + ": planet " + this.position;
        info +=  " - " + this.type;
        console.log(info);
        };
};

var planet = new Planet( "Jupiter", 5, "Gas Giant" );

planet.showPlanet();

Further Adventures

Listing 9.04 - A Planet constructor - Tasks 1&2

Use the Planet constructor function to create a second planet. Don't forget the 'new' keyword.
Call the showPlanet method on your newly created planet.

var Planet = function (name, position, type) {
    this.name = name;
    this.position = position;
    this.type = type;

    this.showPlanet = function () {
        var info = this.name + ": planet " + this.position;
        info +=  " - " + this.type;
        console.log(info);
    };
};

var planet = new Planet( "Jupiter", 5, "Gas Giant" );

// create a second planet
var planet2 = new Planet( "Neptune", 8, "Ice Giant" );

planet.showPlanet();

// display the planet
planet2.showPlanet();