Suppose, we have an array of objects like this −
const arr = [ {id: 1, name: "Mohan"}, {id: 2,name: "Sohan"}, {id: 3,name: "Rohan"} ];
We are required to write a function that takes one such array and constructs an object from it with the id property as key and name as value
The output for the above array should be −
const output = {1:{name:"Mohan"},2:{name:"Sohan"},3:{name:"Rohan"}}
Example
Following is the code −
const arr = [ {id: 1, name: "Mohan"}, {id: 2,name: "Sohan"}, {id: 3,name: "Rohan"} ]; const arrayToObject = arr => { const res = {}; for(let ind = 0; ind < arr.length; ind++){ res[ind + 1] = { "name": arr[ind].name }; }; return res; }; console.log(arrayToObject(arr));
Output
This will produce the following output in console −
{ '1': { name: 'Mohan' }, '2': { name: 'Sohan' }, '3': { name: 'Rohan' } }