git clone https://github.com/gaearon/react-transform-boilerplate.git
cd react-transform-boilerplate
npm install
npm start
open http://localhost:3000
Transforms are enabled for files inside src
(except index.js
).
function tick() {
const element = (
<div>
<h1>Hello, world!</h1>
<h2>It is {new Date().toLocaleTimeString()}.</h2>
</div>
);
ReactDOM.render(
element,
document.getElementById('root')
);
}
setInterval(tick, 1000);
function tick() {
const element = (
<div>
<h1>hello</h1>
<h2>It is {new Date().toLocaleTimeString}</h2>
</div>
)
}
// toLocaleTimeString() 方法可根据本地时间把 Date 对象的时间部分转换为字符串,并返回结果。
控制组件内部的状态,知道如何定义