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:

Live Demo:

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

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