JS 多维数组转一维数组

将[1,2,[3,4,[5,6],7],8]转成怎[1,2,3,4,5,6,7,8]
 

1、最简单方法

1[1,2,[3,4,[5,6],7],8].toString().split(',')
2
3// ->["1", "2", "3", "4", "5", "6", "7", "8"]

2、reduce递归

1function toArray(a){
2    return a.reduce((res,current)=>{
3        return Array.isArray(current)?[...res,...toArray(current)]:[...res,current]
4    },[])
5}
6toArray([1,2,[3,4,[5,6],7],8])
7
8// -->[1, 2, 3, 4, 5, 6, 7, 8]

3 、字符串

1JSON.stringify([1,2,[3,4,[5,6],7],8]).replace(/\[|\]/g,'').split(',')
2
3// -->[1, 2, 3, 4, 5, 6, 7, 8]