How to know if something is an object in javascript?

Asked Apr 19 '22 at 23:01

Active Apr 19 '22 at 23:08

Viewed 51 times

If I have a defined object in javascript like this:

jsObject = {
    objectName : 'some name',
    objectDescription: 'some description',
    objectDate: {
            day: '19',
            month: 'april',
            year: '2022'
    }
}

I wonder if there is a way to determine what is an object (in terms of the structure, not in terms of 'everything in javascript is an object') and what isn't in order to do some later processing with the stored data. For example, objectDate is an object but objectName isn't, that is the kind of discrimination I want to do. Thank you all for the information.

edited Apr 19 '22 at 23:04

Etheryte

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asked Apr 19 '22 at 23:01

alexander garcia

2

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof – Andy Ray Apr 19 '22 at 23:02
1

That won't work @AndyRay. `console.log(typeof []);`? – Andy Apr 19 '22 at 23:05
1

Also `console.log(typeof null)` will print "object" so `typeof` alone will not give you accurate results. – Mushroomator Apr 19 '22 at 23:06
`Object.getPrototypeOf({}) == Object.prototype` is true – Barmar Apr 19 '22 at 23:08
thans your help andy ray, that already solve my question – alexander garcia Apr 19 '22 at 23:09
Also a duplicate for [this](https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript) – Mushroomator Apr 19 '22 at 23:09
@Andy Still works, it is easy enough to weed out the unwanted ones. `const isObject = item => item != null && typeof(item) == "object" && !Array.isArray(item)` – Amadan Apr 19 '22 at 23:09

How to know if something is an object in javascript?

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