react redux学习1

https://egghead.io/lessons/javascript-redux-the-single-immutable-state-tree
以上为学习资料
安装参见下面说明：
https://facebook.github.io/react/
npm install -g create-react-app
create-react-app my-app
cd my-app
npm start
开发工具：webstorm 
fuction addb(a,b){ return a+b}  相对应的箭头函数为：const addb={a,b}=>｛ return a+b｝ 跟上面等同。const addb={a,b}=>a+b;  此为上面的简写吧。let names=[    "aaaa",    "bbbb",    "cccc",];ReactDOM.render(    <div>        {            names.map(function (name) {                return <h1>{name}</h1>            })        }    </div>    ,    document.getElementById('root1'));箭头函数改为：let names=[    "aaaa",    "bbbb",    "cccc",];let newnames=[];ReactDOM.render(    <div>        {            names.map(function (name) {                return <h1>{name}</h1>            })        }    </div>    ,    document.getElementById('root1'));let names=[    "aaaa",    "bbbb",    "cccc",];let newnames=[];ReactDOM.render(    <div>        {            names.map((name)=> <h1>{name}</h1>            )        }    </div>    ,    document.getElementById('root1'));