import React, { Component } from 'react';
const arr = [1, 2, 3]
let status = false
// const arr = null
class Clock extends Component {
render() {
return (
<div>
{
//类似于for
// arr.map(item=>(
// <div style={{color: 'red'}}>{item}</div>
// ))
//筛选
// arr.filter(item=>item == 2)
status ? '1' : '2'
}
<div>Hello, world!</div>
</div>
);
}
}
export default Clock