How to use a Variable for a Key in a JavaScript Object Literal?

Last Updated : 11 Oct, 2024

Using a variable as a key in a JavaScript object literal enables dynamic property creation, allowing us to define object properties based on variable values.

Syntax:

let key="your_choice";
let object = {};
object[key] = "your_choice";
console.log(object);

Example: This shows how to use a variable for a key.

javascript

let key = "Geeksforgeeks";
let object = {};
object[key] = "something";
console.log(object);

Output

{ Geeksforgeeks: 'something' }

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