html-domparser.js

/*
 * DOMParser HTML extension
 * 2012-09-04
 * 
 * By Eli Grey, http://eligrey.com
 * Public domain.
 * NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
 */

/*! @source https://gist.github.com/1129031 */
/*global document, DOMParser*/

(function(DOMParser) {

	var parseFromStringNative = DOMParser.prototype.parseFromString;

	// Firefox/Opera/IE throw errors on unsupported types
	try {
		
		// WebKit returns null on unsupported types
		if ((new DOMParser).parseFromString("", "text/html")) {
			
			// text/html parsing is natively supported
			return;
			
		}
		
	} catch (e) {}

	DOMParser.prototype.parseFromString = function(markup, type) {
		
		if (/^\s*text\/html\s*(?:;|$)/i.test(type)) {
			
			var doc = document.implementation.createHTMLDocument("");
			
			doc.open();
			doc.write(markup);
			doc.close();

			return doc;
			
		} else {
			
			return parseFromStringNative.apply(this, arguments);
			
		}
		
	};
	
}(DOMParser));