w3resource

JavaScript: Check whether the provided value is an object created by the Object constructor

JavaScript fundamental (ES6 Syntax): Exercise-192 with Solution

Write a JavaScript program to check whether the provided value is an object created by the Object constructor.

  • Check if the provided value is truthy.
  • Use typeof to check if it is an object and Object.prototype.constructor to make sure the constructor is equal to Object.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const isPlainObject = val => !!val && typeof val === 'object' && val.constructor === Object;

console.log(isPlainObject({ a: 1 }));
console.log(isPlainObject(new Map()));

Sample Output:

true
false

Flowchart:

flowchart: Check whether the provided value is an object created by the Object constructor

Live Demo:

See the Pen javascript-basic-exercise-192-1 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to check whether the provided integer is a prime number or not.
Next: Write a JavaScript program to check if a value is object-like. Check whether the provided value is not null and its typeof is equal to 'object'.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.