javascript为自己将数组元素转换为数组

Question

如何将数组元素转换为另一个数组？

let a = [2, 4, 0, 8, 9, 15]

，结果将是：

a = [[2], [4], [0], [8], [9], [15]]

Answer 1

使用Array#map迭代数组，并将每个项目包装在一个数组中：

＆＃13;

＆＃13;

let a = [2, 4, 0, 8, 9, 15]

const result = a.map((n) => [n])

console.log(JSON.stringify(result))

＆＃13;

＆＃13;

＆＃13;

Answer 2

let a = [2, 4, 0, 8, 9, 15];
let b = a.map((item) => [item]);

Answer 3

    a = [2, 4, 0, 8, 9, 15]
    console.log(result = a.map((n) => [n]))
    b=[]
//you can try  below also
     for (i in a){
      b.push([i]);
      }