JSFiddle - React, Tailwind, and code Playground

JavaScript

var arr = ["A", "B", "C", "D", "E", "F"];
var ind = [4, 0, 5, 2, 1, 3];
var obj = {}
for(var i=0;i<arr.length;i++)
	obj[ind[i]]=arr[i];
console.log(obj);