Promise all的使用
//查询订单物流 getExpressListById(expressId,callBack){ //返回一个promise对象 return new Promise((resolve, reject)=>{ this.$http('get', 'getExpressListById', {expressId:expressId}).then(res => { callBack(res); resolve(); }).catch(function(err) { console.log(1, err) reject(); }); }); }, //查询订单退款商品 getRefundOrderGoodsByOrderId(){ this.$http('get', 'getRefundOrderGoodsByOrderId', {orderId:this.orderDetailList.order.id}).then(res => { // console.log(res) let allTask = [];//promise数组 res.forEach(g=>{ g.mallOrderGoodsRefund.expressId && allTask.push(this.getExpressListById(g.mallOrderGoodsRefund.expressId,expressList=>{g.expressList = expressList})) }); console.log(allTask); //Promise.all 执行allTask数组里的所有promise对象 Promise.all(allTask).then(()=>{ this.$forceUpdate() }); this.refundOrderGoods = res; console.log(this.refundOrderGoods,66) }).catch(function(err) { console.log(1, err) }); }