Click Cancel to return to the previous page and modify the parameter value of the previous page, let pages = getcurrentpages() let prevpage = pages [pages. Length - 2] / / the data of the previous pag

Realization function ：

Personal center ：

List to be visited ：

Details page to be visited ：

1. Other pages return Personal center page , Need to retrieve data , Update page content ;
2. Details page to be visited , After completing the follow-up , Point return , Back to the waiting list , Retrieve data , Update the data of the list to be visited .

Code implementation ：

1. Personal center page ：

<view class="iconbox" bindtap="daizhuifang">
	<image class="iconimg" mode="widthFix" src="../../images/kehuxitong/xsicon04.png" />
	<view class="icontxt"> To be followed up </view>
	<view class="daizhuikh" wx:if="{
     {daizhuikh}}">{
   {daizhuikh}}</view>  <!--  Here are the unread numbers displayed  -->
</view>

	/** *  Life cycle function -- Monitor page display  */
    // onLoad Called when the page loads , You can get parameters , adopt options.
	// onShow Call... When the page is displayed .
    onShow: function() {
     // Refresh the page display and update the data ;
        // console.log(this.data.token);
        // console.log(this.data.type);

        wx.showLoading({
    
            title: ' Loading ...',
            mask: true,
        })
        this.getcard()
        this.getCollectiondata()
        this.gethistorydata()
        if (this.data.type == 1) {
    
            this.getmarketArticle(0)
            this.getmarketArticle(1)
            this.getmarketArticle(2)
            this.getmarketArticle(3)
            this.getmarketLoupanList()
                // this.getgetUserInfo();
            this.getgetCardIsStatus()
            this.getgetMemberCount()
            this.getsecondManageCount()

            console.log('onshow')
                // this.getgetManageUserList();
        }
        setTimeout(() => {
    
            wx.hideLoading()
        }, 500)

        // if (this.data.token != '') {
    
        // this.setData({
    
        // token: false
        // })
        // }
    },

2. Waiting list page ：

 	/** *  Life cycle function -- Monitor page display  */
    onShow: function() {
    
        wx.stopPullDownRefresh() // Stop the pull-down refresh effect when the refresh is complete 
        this.getgetTagsList()
        if (this.data.isaddkehu) {
     // isaddkehu  The parameter is transmitted from the details page to be followed up , Update the page if there is a value , Otherwise, do not update the list page ;
            console.log('isaddkehu')
            this.setData({
    
                nomore: 0,
                isLoadInterface: false,
                pagecount: 1,
                page: 1,
                kehulistarr: [],
            })
            this.getgetManageUserList()
            this.setData({
    
                isaddkehu: false,
            })
        }
    },

3. Details page to be visited ：

	//  After submitting for follow-up , perform 
	setTimeout(() => {
    
	  let pages = getCurrentPages() //  Data for the current page ,
	  let prevPage = pages[pages.length - 2] //  The data on the previous page 
	  prevPage.setData({
    
	    isaddkehu: true, // Modify the parameter value on the previous page 
	  })
	  // console.log(pages);
	  // wx.navigateBack({
    
	  // delta: 1
	  // })
	}, 1000)

thus , On the previous page onShow We can judge this in the future isaddkehu Whether the parameter value has been modified , You can know whether to update the data .