| /* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| /** |
| File Name: proto_4.js |
| Section: |
| Description: new PrototypeObject |
| |
| This tests Object Hierarchy and Inheritance, as described in the document |
| Object Hierarchy and Inheritance in JavaScript, last modified on 12/18/97 |
| 15:19:34 on http://devedge.netscape.com/. Current URL: |
| http://devedge.netscape.com/docs/manuals/communicator/jsobj/contents.htm |
| |
| This tests the syntax ObjectName.prototype = new PrototypeObject using the |
| Employee example in the document referenced above. |
| |
| If you add a property to an object in the prototype chain, instances of |
| objects that derive from that prototype should inherit that property, even |
| if they were instatiated after the property was added to the prototype object. |
| |
| |
| Author: christine@netscape.com |
| Date: 12 november 1997 |
| */ |
| |
| var SECTION = "proto_3"; |
| var VERSION = "JS1_3"; |
| var TITLE = "Adding properties to the prototype"; |
| |
| startTest(); |
| writeHeaderToLog( SECTION + " "+ TITLE); |
| |
| function Employee () { |
| this.name = ""; |
| this.dept = "general"; |
| } |
| function Manager () { |
| this.reports = []; |
| } |
| Manager.prototype = new Employee(); |
| |
| function WorkerBee () { |
| this.projects = new Array(); |
| } |
| |
| WorkerBee.prototype = new Employee(); |
| |
| function SalesPerson () { |
| this.dept = "sales"; |
| this.quota = 100; |
| } |
| SalesPerson.prototype = new WorkerBee(); |
| |
| function Engineer () { |
| this.dept = "engineering"; |
| this.machine = ""; |
| } |
| Engineer.prototype = new WorkerBee(); |
| |
| var jim = new Employee(); |
| var terry = new Engineer(); |
| var sean = new SalesPerson(); |
| var wally = new Manager(); |
| |
| Employee.prototype.specialty = "none"; |
| |
| var pat = new Employee(); |
| var leslie = new Engineer(); |
| var bubbles = new SalesPerson(); |
| var furry = new Manager(); |
| |
| Engineer.prototype.specialty = "code"; |
| |
| var chris = new Engineer(); |
| |
| |
| new TestCase( SECTION, |
| "jim = new Employee(); jim.specialty", |
| "none", |
| jim.specialty ); |
| |
| new TestCase( SECTION, |
| "terry = new Engineer(); terry.specialty", |
| "code", |
| terry.specialty ); |
| |
| new TestCase( SECTION, |
| "sean = new SalesPerson(); sean.specialty", |
| "none", |
| sean.specialty ); |
| |
| new TestCase( SECTION, |
| "wally = new Manager(); wally.specialty", |
| "none", |
| wally.specialty ); |
| |
| new TestCase( SECTION, |
| "furry = new Manager(); furry.specialty", |
| "none", |
| furry.specialty ); |
| |
| new TestCase( SECTION, |
| "pat = new Employee(); pat.specialty", |
| "none", |
| pat.specialty ); |
| |
| new TestCase( SECTION, |
| "leslie = new Engineer(); leslie.specialty", |
| "code", |
| leslie.specialty ); |
| |
| new TestCase( SECTION, |
| "bubbles = new SalesPerson(); bubbles.specialty", |
| "none", |
| bubbles.specialty ); |
| |
| |
| new TestCase( SECTION, |
| "chris = new Employee(); chris.specialty", |
| "code", |
| chris.specialty ); |
| test(); |