Implementation of the HTML5 Microdata specification

• Spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/microdata.html
• Demo: http://jsfiddle.net/termi/Nsq27/
• Status: Stable, but be carefull in IE8

Example

var img = document.createElement("img");
img.itemProp = "test";
img.src = "http://example.org/example.jpg";
img.itemValue == img.src;//True

var div = document.createElement("div");
div.appendChild(p);
div.itemScope = true;
div.innerHTML = "<div><span><p itemprop=test>some test</p></span></div>";
div.properties["test"][0].itemValue;//"some test"

More examples in example folder

Microdata JS API

• Element.itemValue
• Element.itemProp
• Element.itemScope
• Element.itemId
• Element.itemType
• Element.itemRef
• Element.properties
• window.microdata_liveProperties = true - for auto update Element.properties value false (default) - for cached Element.properties value

Install

• For modern browsers and IE8+:

1. First add ES5 and DOM shim (for now only this shim supported: https://github.com/termi/ES5-DOM-SHIM/)

<script src="a.js"></script>

2. When add microdata script

<script src="microdata-js.js"></script>

• For IE8+ support:

1. Add ES5 and DOM shim and microdata script as:

<!--[if IE 8]>
<script src="a.ie8.js"></script>
<![endif]-->
<script src="a.js"></script>
<script src="microdata-js.js"></script>

EXTRAs

TODO::

Features

• Live "properties" property (turn it on manualy window.microdata_liveProperties = true)
• Implementation of PropertyNodeList and HTMLPropertiesCollection prototypes
• Extending DocumentFragment.prototype with getItems function
• Extending PropertyNodeList and HTMLPropertiesCollection prototypes with toJSON functions
• Inherit native PropertyNodeList and HTMLPropertiesCollection prototypes from Array

Browsers support

• Opera < 12, Google Chrome, Safary, FireFox, IE8 and maybe others

Tests

tests/Microdata_tests_files/Microdata_tests.html based on Opera microdata tests

LIMITATION

1. Require window.DOMStringCollection (DOMSettableTokenList like object) (created by https://github.com/termi/ES5-DOM-SHIM/)
2. Opera >= 11.60:

• PropertyNodeList.values, PropertyNodeList.toJSON and HTMLPropertiesCollection.toJSON propertys will be available only after window.onload event

TODO

1. Live HTMLElement.prototype without window.microdata_liveProperties option
2. Delete code adding "values" property if it not compliance with FINALE Microdata specification
3. FireFox bug $0.itemId = "" -> $0.itemId != ""

License

MIT