var Tab = { _handleZanTabChange(e) { var dataset = e.currentTarget.dataset; var componentId = dataset.componentId; var selectedId = dataset.itemId; var data = { componentId, selectedId }; console.info('[zan:tab:change]', data); if (this.handleZanTabChange) { this.handleZanTabChange(data); } else { console.warn('页面缺少 handleZanTabChange 回调函数'); } } }; module.exports = Tab;