将JavaScript数组转换为JSON格式：JavaScript

Question

i have an array like this coming back response from the server:

[
    [
        "111",
        1
    ],
    [
        "1010",
        4
    ],
    [
        "111",
        5
    ],
    [
        "1010",
        6
    ],
    [
        "1010",
        7
    ]
]

i want to convert it into a JavaScript JSON like this:

[
 {
    "branch":  "111",
    "id":1

 },
 {
    "branch":  "1010",
    "id":4
 },
 {
    "branch":  "111",
     "id":5
 },
 {
    "branch":  "1010",
     "id":6
 },
 {
    "branch":  "1010",
     "id":7
 }
]

If any one can help it will be much appreciable. Bcs i am new to javascript

Answer 1

Explanation:

You can do this with Array#map and destructuring .

Destructuring :

The destructuring assignment syntax is a JavaScript expression that makes it possible to unpack values from arrays, or properties from objects, into distinct variables.

Array#map :

The map() method creates a new array with the results of calling a provided function on every element in the calling array.

Solution:

 const data = [["111",1],["1010",4],["111",5],["1010",6],["1010",7]]; const res = data.map(([branch,id])=>({branch,id})); res.sort((a,b)=>a.id-b.id); console.log(res);