Page({ data:{ //类型列表 lastRootList:0,//上次点击的类型 rootList:[{name:'服饰箱包',selectClass:'root-active',iconClass:'bag'}, {name:'家居生活',selectClass:'',iconClass:'furniture'}, {name:'母婴玩具',selectClass:'',iconClass:'baby'}, {name:'食品饮料',selectClass:'',iconClass:'food'}, {name:'数码电器',selectClass:'',iconClass:'appliances'}] }, rootItem_bindtap:function(e){ var key='rootList'; nav="更新的数据"; //更新nav数据 this.setData({ [key]:nav }); } })