JavaScript: Create a new object from the specified object, where all the keys are in lowercase

JavaScript fundamental (ES6 Syntax): Exercise-180 with Solution

Write a JavaScript program to create an object from the specified object, where all keys are in lowercase.

• Use Object.keys() and Array.prototype.reduce() to create a new object from the specified object.
• Convert each key in the original object to lowercase, using String.prototype.toLowerCase().

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const lowercaseKeys = obj =>
  Object.keys(obj).reduce((acc, key) => {
    acc[key.toLowerCase()] = obj[key];
    return acc;
  }, {});
const myObj = { Name: 'Adam', sUrnAME: 'Smith' };
const myObjLower = lowercaseKeys(myObj);
console.log(myObjLower);

Sample Output:

{"name":"Adam","surname":"Smith"}

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-180-1 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to compare two objects to determine if the first one contains equivalent property values to the second one, based on a provided function.
Next: Write a JavaScript program to get the last element from an given array.