(function () {
    if (typeof tidDomElementConfig === 'object' && tidDomElementConfig.hasOwnProperty('config')) {
        var tidElementSelector = tidDomElementConfig.config.selector;
        var tidElementSelectorName = tidDomElementConfig.config.selectorName;
        var tidDataAttribute = tidDomElementConfig.config.attribute;

        switch (tidElementSelector) {
            case 'class':
                var classElements = document.getElementsByClassName(tidElementSelectorName);
                var tid = __linkTrackingController.USER_ID_HASH || '';
                var getUniqueIdDefined = typeof __linkTrackingController.getUniqueId === 'function';

                for (var i = 0; i < classElements.length; i++) {
                    var el = classElements[i];
                    if (tid && getUniqueIdDefined) {
                        var tidLid = tid + '_' + __linkTrackingController.getUniqueId();
                        el.setAttribute(tidDataAttribute, tidLid);
                    }
                }
                break;
        }
    }
})();