function hasClass()

in assets/js/main.js [8:34]

• 5 lines of code
• 2 McCabe index (conditional complexity)

    function hasClass( className ) {
        if (!document.getElementsByClassName) { //class name function in old IE
            document.getElementsByClassName = function(search) {
                var d = document, elements, pattern, i, results = [];
                if (d.querySelectorAll) { // IE8
                    return d.querySelectorAll("." + search);
                }
                if (d.evaluate) { // IE6, IE7
                    pattern = ".//*[contains(concat(' ', @class, ' '), ' " + search + " ')]";
                    elements = d.evaluate(pattern, d, null, 0, null);
                    while ((i = elements.iterateNext())) {
                        results.push(i);
                    }
                } else {
                    elements = d.getElementsByTagName("*");
                    pattern = new RegExp("(^|\\s)" + search + "(\\s|$)");
                    for (i = 0; i < elements.length; i++) {
                        if ( pattern.test(elements[i].className) ) {
                            results.push(elements[i]);
                        }
                    }
                }
                return results;
            };
        }
        return !!document.getElementsByClassName( className ).length; //return a boolean
    }