<view class="weui-cell weui-cell_input">
 <view class="weui-cell__hd">
 <view class="weui-label rui-justify">
 <text space="ensp">出 发 地</text>
 </view>
 </view>
 <view class="weui-cell__bd">
 <input class="weui-input" name="beginAddress" bindinput="inputedit" data-obj="info" data-item="beginAddress" value="{{info.beginAddress}}"
 placeholder="请输入出发地" disabled="{{info.isPreDetail}}" />
 </view>
</view>
<view wx:for="{{info.details}}" wx:key="key" class="forItemBorder">
 <view class="weui-cell weui-cell_input ">
 <view class="weui-cell__hd">
 <view class="weui-label rui-justify">
 <text space="ensp">途 径 地</text>
 </view>
 </view>
 <input class="weui-input" id="place-{{index}}" bindinput="setPlace" placeholder="请输入途径地" />
 <input class="weui-input lcs" id="number-{{index}}" bindinput="setNumber" placeholder="里程数(km)" />
 </view>
</view>
<view class="weui-cell weui-cell_input">
 <view class="weui-cell__hd">
 <view class="weui-label rui-justify">
 <text space="ensp">目 的 地</text>
 </view>
 </view>
 <input class="weui-input" name="destination" bindinput="inputedit" data-obj="info" data-item="destination" value="{{info.destination}}"
 placeholder="请输入目的地" disabled="{{info.isPreDetail}}" />
 <input class="weui-input lcs" name="endLength" bindinput="inputedit" data-obj="info" data-item="endLength" value="{{info.endLength}}"
 placeholder="里程数(km)" disabled="{{info.isPreDetail}}" />
</view>
<view class="weui-cell" hidden="{{info.isPreDetail}}">
 <button type='primary' bindtap='addItem' style='width:50%;'>增加途径地</button>
 <button type='primary' bindtap='removeItem' style='width:50%;margin-left:5rpx;'>
 删除途径地
 </button>
</view>

/**
 * Detail类 构造函数 
 * @param {string} placeName 途径地
 * @param {string} number 里程数
 */
function Detail(placeName, number) {
 this.placeName = placeName;
 this.number = number;
}
function Info() {
 this.details = [];
}
Page({
 data: {
 info: {}
 },
 init: function () {
 let that = this;
 this.setData({
  info: new Info(),
 });
 },
 onLoad: function (options) {
 this.init();
 },
 addItem: function (e) {
 let info = this.data.info;
 info.details.push(new Detail());
 this.setData({
  info: info
 });
 },
 removeItem: function (e) {
 let info = this.data.info;
 info.details.pop();
 this.setData({
  info: info
 });
 },

})

setPlace: function (e) {
 let index = parseInt(e.currentTarget.id.replace("place-", ""));
 let place = e.detail.value;
 let info = this.data.info;
 info.details[index].placeName = place;
 this.setData({
  info: info
 });
 },
setNumber: function (e) {
 let index = parseInt(e.currentTarget.id.replace("number-", ""));
 let number = e.detail.value;
 let info = this.data.info;
 info.details[index].number = number;
 this.setData({
  info: info
 });
 },