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    <p><strong>Update</strong> My original answer below was written 6 years ago in a style befitting the times and my understanding. In response to some conversation in the comments, a more modern approach to this is as follows:</p> <pre><code>(function() { if ( typeof Object.id == "undefined" ) { var id = 0; Object.id = function(o) { if ( typeof o.__uniqueid == "undefined" ) { Object.defineProperty(o, "__uniqueid", { value: ++id, enumerable: false, // This could go either way, depending on your // interpretation of what an "id" is writable: false }); } return o.__uniqueid; }; } })(); var obj = { a: 1, b: 1 }; console.log(Object.id(obj)); console.log(Object.id([])); console.log(Object.id({})); console.log(Object.id(/./)); console.log(Object.id(function() {})); for (var k in obj) { if (obj.hasOwnProperty(k)) { console.log(k); } } // Logged keys are `a` and `b` </code></pre> <p>If you have archaic browser requirements, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty#Browser_compatibility" rel="noreferrer">check here</a> for browser compatibility for <code>Object.defineProperty</code>.</p> <p>The original answer is kept below (instead of just in the change history) because I think the comparison is valuable. </p> <hr> <p>You can give the following a spin. This also gives you the option to explicitly set an object's ID in its constructor or elsewhere.</p> <pre><code>(function() { if ( typeof Object.prototype.uniqueId == "undefined" ) { var id = 0; Object.prototype.uniqueId = function() { if ( typeof this.__uniqueid == "undefined" ) { this.__uniqueid = ++id; } return this.__uniqueid; }; } })(); var obj1 = {}; var obj2 = new Object(); console.log(obj1.uniqueId()); console.log(obj2.uniqueId()); console.log([].uniqueId()); console.log({}.uniqueId()); console.log(/./.uniqueId()); console.log((function() {}).uniqueId()); </code></pre> <p>Take care to make sure that whatever member you use to internally store the unique ID doesn't collide with another automatically created member name.</p>
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    1. COYou really shouldn't add to `Object.prototype`...
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    2. CO@J-P: Any specific reasons?
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    3. CO@Justin Adding properties to Object.prototype is problematic in ECMAScript 3 because these proprieties are enumerable on all objects. So if you define *Object.prototype.a* then "a" will be visible when you do *for (prop in {}) alert(prop);* So you have to make a compromise between augmenting *Object.prototype* and being able to iterate through record like objects using a for..in loop. This is a serious problem for libraries
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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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