在小程序中使用状态管理mobx

在小程序中使用状态管理mobx

使用mobx后，进入二级页面修改数据返回一级页面显示的数据跟着变

先看效果

控制台打印的数据

以下是代码

store.js

// js/store.js
// 手动安装时引入的路径
import {configure, extendObservable} from "./mobx";

// 设置可在任何地方修改
configure({
  enforceActions: 'never',
});

let Store = function () {
  /*属性*/
  extendObservable(this, {
    // observable data
    todoText: 'aaa',
    // computed data
    get todoTextCount() {
      return this.todoText.length;
    }
  });

  /*方法*/
  // action
  this.changeTodoText = function (todoText) {
    this.todoText = todoText;
  }
}

module.exports.store = new Store

test.js

// pages/test/test.js
import { autorun } from '../../js/mobx';
import { store } from '../../js/store';

Page({
  data: {
    todoText: store.todoText,
  },
  // your other code below
  onLoad: function (evt) {
    this._autorun();
    const _this = this;
    console.log('onLoad', evt);
    // this._autorun();
    store.changeTodoText('test.store.111');
    store.todoText = 'test.store.222';
  },
  _disposer: [],
  _autorun: function () {
    const _this = this;
    _this._disposer.push(
      autorun(function () {
        console.log('autorun.todoText', _this.data, store);
        _this.setData({ todoText: store.todoText });
      })
    );
  },
  onUnload: function (evt) {
　　 this._disposer.map(function (x) { x() });
    this._disposer.length = 0;
  },
  onJumpAaa: function (evt) {
    tt.navigateTo({
      url: '/pages/aaa/aaa' // 指定页面的url
    });
  }
})

aaa.js

// pages/aaa/aaa.js
import { autorun } from "../../js/mobx";
import { store } from "../../js/store";

Page({
  data: {
    todoText: store.todoText,
  },
  // your other code below
  onLoad: function (evt) {
    this._autorun();
    const _this = this;
    console.log('onLoad', evt);
    store.changeTodoText('aaa.store.111');
    store.todoText = 'aaa.store.222';
  },
  _disposer: [],
  _autorun: function () {
    const _this = this;
    _this._disposer.push(
      autorun(function () {
        console.log('autorun.todoText', _this.data, store);
        _this.setData({ todoText: store.todoText });
      })
    );
  },
  onUnload: function (evt) {
　　 this._disposer.map(function (x) { x() });
    this._disposer.length = 0;
  },
})

本文链接：

https://www.cnblogs.com/stumpx/p/13159450.html