小程序实现上下切换位置

<view wx:for="{{companyData}}" wx:key="index" class="overHiden">
 <view class="floarLeft">{{item.name}}</view>
 <view class="floarRight" wx:if="{{index != 0}}" data-index="{{index}}" bindtap="topClick">
 上
 </view>
 <view class="floarRight" wx:if="{{index != companyData.length-1}}" data-index="{{index}}" bindtap="bottomClick">
 下
 </view>
</view>

// pages/yidong/yidong.js
Page({

 /**
 * 页面的初始数据
 */
 data: {
 companyData:[
 {
 id:0,
 name:'产品1'
 },
 {
 id:1,
 name:'产品2'
 },
 {
 id:2,
 name:'产品3'
 },
 {
 id:3,
 name:'产品4'
 },
 {
 id:4,
 name:'产品5'
 }
 ]
 },

 //位置向上移动
topClick: function(e) {
 var that = this
 var index = e.currentTarget.dataset.index
 var one = that.data.companyData[index]
 var two = that.data.companyData[index - 1]
 var index2 = index - 1
 var data1 = "companyData[" + index + "]"
 var data2 = "companyData[" + index2 + "]"
 that.setData({
 [data1]: two,
 [data2]: one
 })
 },
 // 位置向下移动
 bottomClick: function(e) {
 var that = this
 var index = e.currentTarget.dataset.index
 var one = that.data.companyData[index]
 var two = that.data.companyData[index + 1]
 var index2 = index + 1
 var data1 = "companyData[" + index + "]"
 var data2 = "companyData[" + index2 + "]"
 that.setData({
 [data1]: two,
 [data2]: one
 })
 },

 /**
 * 生命周期函数--监听页面加载
 */
 onLoad: function (options) {

 },

 /**
 * 生命周期函数--监听页面初次渲染完成
 */
 onReady: function () {

 },

 /**
 * 生命周期函数--监听页面显示
 */
 onShow: function () {

 },

 /**
 * 生命周期函数--监听页面隐藏
 */
 onHide: function () {

 },

 /**
 * 生命周期函数--监听页面卸载
 */
 onUnload: function () {

 },

 /**
 * 页面相关事件处理函数--监听用户下拉动作
 */
 onPullDownRefresh: function () {

 },

 /**
 * 页面上拉触底事件的处理函数
 */
 onReachBottom: function () {

 },

 /**
 * 用户点击右上角分享
 */
 onShareAppMessage: function () {

 }
})