How Can I Reliably Determine if a JavaScript Value is an Object?

How to Determine Whether a Value is an Object in JavaScript

Determining the type of a value in JavaScript plays a crucial role in various programming scenarios. One common task is checking if a value is an object.

Problem

How can we verify if a value is an object in JavaScript?

Solution

To check if a value is an object in JavaScript, you can use the typeof operator.

if (typeof x === 'object') {
  // x is an object (except a function) or null
}

However, if you want to exclude null, arrays, and functions from the category of objects, you can refine the check as follows:

if (typeof x === 'object' && !Array.isArray(x) && x !== null) {
  // x is an object (excluding null, arrays, and functions)
}

This more specific check ensures that the value is an object without being any of the exceptions mentioned.

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