function checkActiveElement()

in static/js/scroll-apiref.js [114:136]

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

    function checkActiveElement(items, scrollPosition) {
        var offset = 50;
        var offsetScroll = scrollPosition + offset;
        var visibleNode;
        for (var i = 0; i < items.length; i++) {
            var token = items[i];
            var node = getHeadingNode(token);
            if (offsetScroll >= node.offset().top) {
                activeElemToken = token;
            }
        }
        if (!prevElemToken) {
            getNavElemNode(activeElemToken).addClass('selected');
            prevElemToken = activeElemToken;
            return;
        }
        if (activeElemToken !== prevElemToken) {
            getNavElemNode(prevElemToken).removeClass('selected');
            getNavElemNode(activeElemToken).addClass('selected');
            prevElemToken = activeElemToken;
        }
        return activeElemToken;
    }