小程序的动态的增加对象数组的长度,可以将后台查询的对象数组的值赋值给另一个不同的对象数组中的值
例子：
view class="add-btn" bindtap='addItems'添加/viewview wx:for="{{itemLists}}" wx:key="index" class='list' input type='text' value='{{item.id}}'/input text{{item.time}}/text text class='delete-btn' data-idx='{{index}}' bindtap='deleteIitems'删除/text/viewPage({ data: { itemLists: [ { id: 1, time: '00:00:00' }, { id: 2, time: '00:00:00' }, { id: 3, time: '00:00:00' } ] }, addItems() { let list = this.data.itemLists list.push({ id: ~~(Math.random()*100), time: '00:00:00' }) this.setData({ itemLists: list }) }, deleteIitems(e) { let idx = e.currentTarget.dataset.idx let list = this.data.itemLists let filterRes = list.filter((ele,index) = { return index != idx }) this.setData({ itemLists: filterRes }) } }).add-btn{ background: chocolate; width: 200rpx; text-align: center; color: white; margin-bottom: 10px;}.list{ display: flex; justify-content: space-around; border: 1px solid;}.delete-btn{ background: red;}
