转换为字符串，JavaScript时保留嵌套数组结构 [英] Preserve Nested Array Structure When Converting to String, JavaScript

问题描述

当我创建一个嵌套数组时，说:

When I create a nested array, say:

let x = [[0, 1], 2, [3, [4, 5]]]; 

并使用.toString()将其转换为字符串:

and convert it to a string with .toString():

x.toString();
-> "0,1,2,3,4,5"

它不保留数组的嵌套结构.我想得到类似的东西:

It doesn't preserve the nested structure of the array. I would like to get something like:

x.toString();
-> "[0,1],2,[3,[4,5]]"

除了遍历x的元素，测试元素是否为数组等之外，还有其他更聪明的方法吗?

Is there any smarter way of doing this other than looping through elements of x, testing if an element is an array etc.?

推荐答案

您可以使用JSON.stringify并替换

You can use JSON.stringify and replace

 ^\[|\]$

let x = [[0, 1], 2, [3, [4, 5]]]; 

let final = JSON.stringify(x)

// with regex
console.log(final.replace(/^\[|\]$/g,''))

// without regex
console.log(final.slice(1, -1))

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