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Example 1 - Demonstrating Single Inheritance

In this example we will demonstrate the use of single inheritance. First we will create a class called Biped that has a name and a walk method.

xclass.declare("Biped", XObject, {
    constructor: function(name) {
        console.log("constructing Biped " + name);
        this.name = name;
    },
    walk: function() {
        console.log("This " + this.name + " is walking!");
    }
});

Next we create a class called Bird that extends Biped and adds a fly method.

xclass.declare("Bird", Biped, {
    constructor: function(name) {
        console.log("constructing Bird " + name);
    },
    fly: function() {
        console.log("This " + this.name + " is flying!");
    }
});

Next we create a class called AquaticBird that extends Bird and adds a swim method.

xclass.declare("AquaticBird", Bird, {
    constructor: function(name) {
        console.log("constructing AquaticBird " + name);
    },
    swim: function() {
        console.log("This " + this.name + " is swimming!");
    }
});

Next we will use the classes we've defined.