Map Multiple Properties in Array of Objects to the Same Array in JavaScript

Suppose, we have an array of objects like this −

const arr = [    {a: 1, b: 2},    {a: 3, b: 4},    {a: 5, b: 6} ];

We are required to write a JavaScript function that takes in one such array of objects. The function should then map this array to an array of Number literals like this −

const output = [1, 2, 3, 4, 5, 6];

Example

const arr = [    {a: 1, b: 2},    {a: 3, b: 4},    {a: 5, b: 6} ]; const pushToArray = (arr = []) => {    const result = arr.reduce((acc, obj) => {     acc.push(obj.a);    acc.push(obj.b);    return acc; }, []);    return result; }; console.log(pushToArray(arr));

Output

And the output in the console will be −

[ 1, 2, 3, 4, 5, 6 ]