mobx6+使用案例

PS:mobx6版本以后官方不建议使用@observable装饰器了 可看官方案例 https://mobx.js.org/the-gist-of-mobx.html

脚手架 create-react-app

一、安装

//npm yarn 随需求，尽量不要混用，混用有些资源可能会出现掉包
yarn add mobx
yarn add mobx-react

// 版本号
"mobx": "^6.3.2",
"mobx-react": "^7.2.0",

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二、配置package.json

1.把隐藏的webpack暴露出来，释放之前记得请先提交代码 git commit 一次

yarn run eject

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2.安装@babel/plugin-proposal-decorators 插件 必须的

yarn add @babel/plugin-proposal-decorators

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3.修改添加 package.json配置 （手动）

"babel": {
    "plugins": [
        ["@babel/plugin-proposal-decorators", {"legacy": true}]
    ],
    "presets": [
        "react-app"
    ]
}

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三、定义mobx的store

1.目录结构(mobx支持多个多个状态模块)

stores
----- auth.js 模块1

----- test.js 模块2
----- index.js 总入口

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2.模块 auth.js

import { observable, action, computed, makeObservable} from "mobx";

export class AuthStore {
     name = 'kangkang000';
     sex =  '男';
     userObj = {
        name: 'kangkang000',
        age: 23,
        token: '12345689'
    }

    constructor() {
        // mobx6 和以前版本这是最大的区别 
        makeObservable(this, {
            name: observable,
            sex: observable,
            userObj: observable,
            setName: action,
            titleName: computed
        });

    }

    setName(v) {
        console.log('触发action');
        this.name = v;
    }
    setUserObj(obj) {
        this.userObj = obj;
    }

   get titleName(){
        return this.name+'___111';
    }
    get userObject() {
        return this.userObj;
    }

}

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3.定义导出出口index.js

import { AuthStore } from "./auth";
import { TestStore } from "./test";

export const store = {
    authStore: new AuthStore(),
    testStore: new TestStore()
};

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4.在react 工程入口 导入

import { store } from  './store/index';
import { Provider} from 'mobx-react';

ReactDOM.render(
  <React.StrictMode>
    <Provider store = {store}>
      <App  />
    </Provider>
  </React.StrictMode>,
  document.getElementById('root')
);

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四、在页面中使用mobx,并且通过action 改变mobx

import React, { Component, PureComponent } from "react";
import { observer, inject } from 'mobx-react';

@inject( 'store')
@observer
class Index extends PureComponent {

    constructor(props) {
        super(props);
        console.log(this.props);
        this.state = {  };
    }
    render() {
        const { authStore, testStore } = this.props.store;
        return (
            <div>
                {authStore.name}/

                {testStore.name}/

                {authStore.titleName}
                <br />
                <button onClick = { () => { 
                    authStore.setName(new Date().getTime()); 
                } }>点击按钮触发action</button>
            </div>
        );
    }
}

export default Index;

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