MediaWiki:ElementClassTest.js

/* Test if an element has a certain class * Description: Uses regular expressions and caching for better performance. * Maintainers: User:Mike Dillon, User:R. Koot, User:SG */

var hasClass = (function {   var reCache = {};    return function(element, className) {        return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);   }; });