mobx react

  • Z时代
  • 2024-01-10
  • 分类：综合

react

目录结构：

 Model/index.js

'use strict';
import { action, autorun, observable, computed } from "mobx";
export default class TodoList {
    @observable todos = [{ title: "test", finished: true }];
    @observable data = [];
　　 constructor(){
　　　　autorun(()=>{console.log(this.unfinishedTodoCount)});
　　 }
    @computed get unfinishedTodoCount() {
        return this.todos.filter(todo => !todo.finished).length;
    }
    @action getData() {
        fetch("http://localhost/Server/index.php").then(res => res.json()).then(data => this.data = data);
    }
    @action addList() {
        this.todos.push({ title: "test1", finished: false });
    }
}

  • @: es6新增的装饰器语法，babel已支持需要安装 babel-plugin-transform-decorators-legacy

  • 类的静态属性：es7新增的语法，babel已支持需要安装 babel-preset-stage-2

  • @observer: 让 React 组件自动起来，它会自动更新，即便是在一个很大的程序里也会工作的很好

  • @observable：监听数据，当数据发生改变的时候自动刷新视图

  • @computed: 创建自动运算的表达式。（一般用于计算）

  • @action：改变了@observable创建的数据，需要装饰action方法！（需要配合'use strict'使用，有助于更好地构建代码）(可以不适用action,但是不建议这样做)

  • autorun: 当@observable创建的数据发生改变时自动执行

View/index.js

import React,{Component} from "react";
import ReactDOM from "react-dom"; 
import {observer} from "mobx-react";
import TodoList from "../Model/index";
@observer
class TodoListView extends Component {
    componentDidMount(){
        this.props.todoList.getData();
    }
    clickHandle(){
        this.props.todoList.addList();
    }
    render() {
        return <div>
            <ul>
                {this.props.todoList.todos.map(todo =>
                    <TodoView todo={todo} key={todo.id} />
                )}
            </ul>
            Tasks left: {this.props.todoList.unfinishedTodoCount}<br />
            姓名：{this.props.todoList.data.name}<br />
            年龄：{this.props.todoList.data.age}<br />
            密码：{this.props.todoList.data.pass}<br />
            <input name='name' type='button' value="按钮" onClick={this.clickHandle.bind(this)} />
        </div>
    }
}
const TodoView = observer(({todo}) =>
    <li>
        <input
            type="checkbox"
            checked={todo.finished}
            onClick={() => {return todo.finished = !todo.finished}}
        />{todo.title}
    </li>
)
const store = new TodoList();
ReactDOM.render(<TodoListView todoList={store} />, document.getElementById('container'));

 webpack.config.js

var webpack = require('webpack');
var commonsPlugin = new webpack.optimize.CommonsChunkPlugin('common.js');
module.exports = {
    //插件项
    // plugins: [commonsPlugin],
    //页面入口文件配置
    entry: {
        index: './View/index.js'
    },
    //入口文件输出配置
    output: {
        path: 'dist/page',
        filename: '[name].js'
    },
    module: {
        //加载器配置
        loaders: [
            { test: /\.css$/, loader: 'style-loader!css-loader' },
            { test: /\.js$/, loader: 'babel-loader' },
            { test: /\.(png|jpg)$/, loader: 'url-loader' }
        ]
    },
};

.babelrc

{
    "presets": ["react", "es2015", "stage-2"],
    "plugins": [
        "transform-decorators-legacy"
    ]
}

Page/index.html

<html>
<head>
    <meta charset="utf-8" />
</head>
<body>
    <div id="container"></div>
    <script src="../dist/page/index.js"></script>
</body>
</html>

以上是 mobx react 的全部内容， 来源链接： utcz.com/z/381721.html

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