create and push key value object in array-CodePudding

I have an array :

const data = [{"label": "a", "value": 4}, {"label": "b", "value": 1}, {"label": "c", "value": 2}]

I want to create a new array of objects where I have to give key and value in it.

For eg,:

const newArr = [{1,4},{2,1},{3,2}]

here first item of an object is the key, which has to increase as the number of objects increase, and second item is the value from data.

CodePudding user response：

const data = [{"label": "a", "value": 4}, {"label": "b", "value": 1}, {"label": "c", "value": 2}];
const out = data.map((item, index) => [index   1, item.value]);
console.log(out);

CodePudding user response：

const data = [{"label": "a", "value": 4}, {"label": "b", "value": 1}, {"label": "c", "value": 2} answer

CodePudding user response：

To push an object into an array, call the push() method, passing it the object as a parameter. For example, arr.push({name: 'Tom'}) pushes the object into the array. The push method adds one or more elements to the end of the array.

index.js

let arr = [];

const obj = {name: 'Tom'};

arr.push(obj);

console.log(arr); //