菜鸟教程在线编辑器

AI 编程工具
 
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	<meta charset="utf-8">
	<title>菜鸟教程(runoob.com)</title>
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	<p>按 F12，在 Console 栏目查看结果，以下是截图：</p>
	<p><img src="https://www.248k.com/wp-content/uploads/2024/03/d34371ad437b91cb53630b61dffddbca-1.png"></p>
<script>
let nestedArray = [1, 2, [3, 4, [5, 6]]];
let flatArray = nestedArray.flat();
console.log(flatArray);
// 输出: [1, 2, 3, 4, [5, 6]]
 
// 指定深度为2
let deeplyNestedArray = [1, 2, [3, 4, [5, 6]]];
let deeplyFlatArray = deeplyNestedArray.flat(2);
console.log(deeplyFlatArray);
// 输出: [1, 2, 3, 4, 5, 6]
</script>

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