React循环遍历渲染数组和对象元素方式

const pureArr = ['a','b','c','d']
//假如我们想将上面的数组利用react渲染成一个列表，代码如下：{
{pureArr.map(item => (
<li key={item}>item</li>
))}

const objArr = [
  {
    value: "this",
    label: "this"
  },
  {
    value: "is",
    label: "is"
  },
  {
    value: "test",
    label: "test"
  }
];
//假如我们想将上面的数组利用react渲染成一个列表，代码如下：{
{objArr.map((item, idx) => (
       <li key={idx} className={classes.li}>
          {item.label} : {item.value}
        </li>
	))
}

const statusObj = {
  developing: 'Developing',
  implemented: 'Implemented',
  auditClean: 'Audit Clean',
  deprecation: 'Deprecated',
  unknown: 'Unknown',
}
function SimpleList(props) {
  const { classes } = props;
  return (
    <div className={classes.root}>
    <ol>
    {Object.keys(statusObj).map((obj, idx) => (
          <li key={idx} className={classes.li}>{obj} : {statusObj[obj]}</li>         
    ))}
    </ol>
    </div>
  );
}

const arr = [a, b, c]
render(){
  return (
	<div>
	{
		arr.map((item,index)=>{
			return (
			  <div key={index}>{item}</div>
			)
		 })
	}
	</div>
  )
}

const obj = {
	a: [1,2,3],
	b: [4,5,6]
}
Object.keys(obj).map((element,index)=>{
	return (
		<div key={index}>
			<div>{element}</div>
			element.map((item,i)=>{
				return (
					<div key={i}>{item}</div>
				)
			})
		</div>
	)
})

 // field为接口字段，属性个数不确定。
 // 例如： field = { a: "123", model: "text", ... } 
 <Descriptions 
 	title="自定义参数" 
 	size="middle" 
 	labelStyle={{ color:"#999" }} 
 	style={{ overflowY: "auto", maxHight: "160px" }}
 >
	{/* <pre >{JSON.stringify(field,null,2)}</pre> */}
	{
	  Object.keys(field).map((name)=>{
	    return <Descriptions.Item label={name}>{field.name}</Descriptions.Item>
	  })
	}
	</Descriptions>