Question

How to convert object keys into an array in JavaScript

Answer 1

const obj = {
  '0': 'python',
  '1': 'javascript',
  '2': 'c++',
  '3': 'c',
  '4': 'c#',
};
 
const arr = Object.keys(obj);
 
console.log(arr);
 
 
   
     
     
/*
run:
     
["0", "1", "2", "3", "4"]
     
*/

 

70+ SQL courses for beginners and professionals

Answer 2

const obj = {
  id: 383912,
  name: "Albus Dumbledore",
  academicrank: "Professor"
};
 
const arr = Object.keys(obj);

console.log(arr); 

console.log(arr[0]); 

console.log(arr[0][0]); 
console.log(arr[0][1]); 
 
   
     
     
/*
run:
     
["id", "name", "academicrank"]
"id"
"i"
"d"
     
*/

 

70+ SQL courses for beginners and professionals