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| var app = getApp();
| Page({
| data: {
| list: [
| { value: 1, hadReport: false },
| { value: 2, hadReport: false },
| { value: 3, hadReport: false },
| { value: 4, hadReport: false },
| { value: 5, hadReport: false },
| { value: 6, hadReport: false },
| { value: 7, hadReport: false },
| { value: 8, hadReport: false },
| { value: 9, hadReport: false },
| ],
| showLoading: false,
| },
| onLoad() {
| this.observer();
| },
| observer(){
| if (this._observer){
| this._observer.disconnect();
| }
| this._observer = wx.createIntersectionObserver(this, { observeAll: true })
| this._observer.relativeToViewport({ bottom: 0 })
| .observe('.item', (res) => {
| const { index } = res.dataset;
| if (!this.data.list[index].hadReport) {
| console.log(`report ${index}`)
| this.data.list[index].hadReport = true;
| this.setData({ list: [].concat(this.data.list) })
| }
|
| })
| },
| onReachBottom(){
| this.setData({showLoading: true })
| setTimeout(() => {
| this.setData({
| showLoading: false,
| list: [].concat(this.data.list, [{ value: 9, hadReport: false }]) },
| () => {
| this.observer();
| }
| )
| }, 2000)
| },
| onUnload() {
| if (this._observer) this._observer.disconnect()
| }
| })
|
|
