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1.30 Array迭代器.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<script type="text/javascript">
		let arr = ["name","sex","num"]
		let arrkeys =arr.keys()
		let arrvals =arr.values()
		// let {value,done} = arrvals.next()
		// console.log(arrvals.next())

		console.log(arrkeys,arrvals)

		// 遍历所有
		// while(({value,done} = arrvals.next()) && done ===false){
		// 	console.log(value,done)
		// }

		// 获取索引
		// for (let i of arrkeys){
		// 	console.log(i)
		// }

		// 获取值
		/*for (let val of arrvals){
			console.log(val)
		}*/

		// 键值对
		let entries = arr.entries()
		console.log(entries.next())
		// value变数组 有索引及值还有长度
		// 获取键值
		/*for (let [keys,vals] of entries){
			console.log(keys,vals)
		}*/
		// 对象解构获取所有
		let {done:c,value:[a,b]}=entries.next()
		console.log(a,b,c)
	</script>
</body>
</html>