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    <p>In your first proof:</p> <pre><code>function a () {}; function b () {}; a.prototype === b.prototype; // false </code></pre> <p>You're hitting on the fact that the <code>prototype</code> isn't <code>Object</code> -- it's not the base class. It's an object, which is in turn extended, prototypically, with the methods and properties of <code>Object</code>.<br> And any test of <code>{} === {};</code> is going to return false, <strong><em>always</em></strong>, unless you're testing two pointers to the same object:</p> <pre><code>var a = {}, b = a; a === b; // true </code></pre> <p>Your inheritance trainwreck afterwards points directly to missing this concept, as you've set all three functions to point to the same object (originally to <code>Object</code> itself, and then to <code>Obj1</code>'s prototype object).<br> A <code>prototype</code> is <strong><em>live</em></strong>, any change to the prototype, after object construction, will reflect in the objects containing a pointer to that object.</p> <p>You've given <code>Obj1</code>, <code>Obj2</code> and <code>Obj3</code> a pointer to the exact same object.<br> Ergo, any modifications to that prototype object they all share will reflect in all of their constructed objects, as inheritance-resolution happens in real-time, when you attempt to access a property (rather than living in some static, pre-compiled, GOTO state).</p> <p>If you wanted the ability to subclass, you could do something like this:</p> <pre><code>var A = function () {}; A.prototype.foo = function () {}; var a = new A(); var B = function () {}; B.prototype = a; // or new A(); -- an object which can live-lookup the prototype of A // problem is, `constructor` on the prototype will now point to `A`, so... B.prototype.constructor = B; // now b instanceof B should work in tests B.bar = function () {}; var b = new B(); b.foo(); // A.prototype.foo b.bar(); // B.prototype.bar </code></pre> <p>But really, you're going to drive yourself crazy if you try to extend this too far.<br> A saner path to follow in JS is component-based object construction, and dependency-injection.</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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