How can I check if a variable is an object in JavaScript?

How can I check if a variable is an object in JavaScript?

You can use the typeof operator. For example, typeof myVar === 'object'.

What about arrays? Are they considered objects?

Yes, in JavaScript, arrays are also objects. You can check with Array.isArray(myVar) to specifically check for arrays.

Is there a way to differentiate between null and an object?

Yes, typeof null returns 'object', so you should check if the variable is not null first: myVar !== null && typeof myVar === 'object'.

Can I use the instanceof operator for this?

Yes, instanceof can be used to check if a variable is an instance of a specific class or constructor, like myVar instanceof Object.