The example code of WeChat applet uses scroll-view tag to achieve automatic sliding to the bottom function

// -y="true" Y-axis scrolling// 2. It should be set to be high// 3. Use the scroll-top attribute to scroll to the bottom. Scroll-top does not bring units<scroll-view scroll-y="true" style="height:{{height-50}}px;" scroll-top="{{scrollTop}}">
 <block wx:for="{{recordList}}" wx:key="">
 <view>
 <text>{{}}</text>
 </view
 </block>
</scroll-view>

Page({
 data: {
 // List recordList：'',
 height: '',
 scrollTop: 0
 },
 onLoad: function (options) {
 // Get the height of the current window var height = ().windowHeight;
 // Below is an http request I encapsulated ().then(res => {
 //res is the data returned after the request is successful  if ( === 0) {
  var length = 
  ({
  // Assign the obtained List to recordList   'recordList': ,
   // 1. Calculate the height of the label of each item on the page   // 2. Use the array to obtain the length of the List * the height of each item label (400 is what I have visually tested, but to put it bluntly, it is written nonsense. Anyway, it must be higher than the height of each item, as long as it is high enough.)   'scrollTop': length * 400
  })
  }
 })
 }
})