Class: Object

Extends

• external:Object#

Methods

<static> extend() → {Object}

Extend a class prototype with the provided mixin descriptors. Designed as a faster replacement for John Resig's Simple Inheritance.

Parameters:

Name	Type	Description
mixins...	Array.<Object>	Each mixin is a dictionary of functions, or a previously extended class whose methods will be applied to the target class prototype.

Source:

object.js, line 153

Returns:

Type

Object

Example

var Person = me.Object.extend({
    "init" : function (isDancing) {
        this.dancing = isDancing;
    },
    "dance" : function () {
        return this.dancing;
    }
});

var Ninja = Person.extend({
    "init" : function () {
        // Call the super constructor, passing a single argument
        this._super(Person, "init", [false]);
    },
    "dance" : function () {
        // Call the overridden dance() method
        return this._super(Person, "dance");
    },
    "swingSword" : function () {
        return true;
    }
});

var Pirate = Person.extend(Ninja, {
    "init" : function () {
        // Call the super constructor, passing a single argument
        this._super(Person, "init", [true]);
    }
});

var p = new Person(true);
console.log(p.dance()); // => true

var n = new Ninja();
console.log(n.dance()); // => false
console.log(n.swingSword()); // => true

var r = new Pirate();
console.log(r.dance()); // => true
console.log(r.swingSword()); // => true

console.log(
    p instanceof Person &&
    n instanceof Ninja &&
    n instanceof Person &&
    r instanceof Pirate &&
    r instanceof Person
); // => true

console.log(r instanceof Ninja); // => false