Rename Variables When Using Object Destructuring in JavaScript

Jun 17, 2022

When destructuring an object, you can rename the variables like so:

const obj = { first_name: 'John', last_name: 'Smith' };

const { first_name: firstName, last_name: lastName } = obj;
firstName; // 'John'
lastName; // 'Smith'

This is perfect for cases where you want to rename variables from a REST API whose naming conventions don't line up with yours. For example, switching variables from snake_case to camelCase or vice versa.

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