前端学习日记（十五）

一.react学习

Day1-02.React开发环境创建_哔哩哔哩_bilibili

const message = 'this is message'function getAge(){return 18
}function App(){return (<div><h1>this is title</h1>{/* 字符串识别 */}{'this is str'}{/* 变量识别 */}{message}{/* 变量识别 */}{message}{/* 函数调用 渲染为函数的返回值 */}{getAge()}</div>)
}

const flag = true
const loading = falsefunction App(){return (<>{flag && <span>this is span</span>}{loading ? <span>loading...</span>:<span>this is span</span>}</>)
}

 

二.组件开发task

yarn安装

yarn run