JavaScript Inheritance and Object Programming

Coding Tutorial, Chapter 2c

Add Base Class Parameters

© 18 July, 2013, Martin Rinehart

Results

An alert() (or console.log(), if you prefer) showing the principle properties of your Box object.

The message should be compact. (It will be part of, for example, a Button object's toString().

Code

Code within the <script> tag (following "use strict";).

var ns = {}; // rename ns (namespace)!!! ns.Box = function (parent, id, pos_size, color) { var new_box = this; ns.Box.init(new_box, parent, id, pos_size, color); } ns.Box.init = function(new_box, parent, id, pos_size, color) { new_box.parent = parent; new_box.id = id; new_box.pos_size = pos_size; new_box.color = color; } // end: Box.init() ns.Box.prototype.toString = function () { return 'Box{' + 'parent=' + this.parent + 'id=' + this.id + 'pos_size=' + this.pos_size + 'color=' + this.color '}' } alert( new ns.Box( document.body, 'test Box', [1,2, 3,4], 'red' ) );

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