标签：ES6 flatMap const flat arr result 数组
原视频
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>flat 与 flatMap</title>
</head>
<body>
<script>
//flat 平
//将多维数组转化为低位数组
// const arr = [1,2,3,4,[5,6]];
// const arr = [1,2,3,4,[5,6,[7,8,9]]];
//参数为深度 是一个数字
// console.log(arr.flat(2));
//flatMap
const arr = [1,2,3,4];
const result = arr.flatMap(item => [item * 10]);
console.log(result);
</script>
</body>
</html>
标签：ES6,
flatMap,
const,
flat,
arr,
result,
数组
From： https://www.cnblogs.com/chuixulvcao/p/17204460.html