\
Defining a new object in Javascript is pretty easy - but what if you want to find out if it's empty? For example, `{}` is an empty object, but how do we **actually** test that this is the case?

```javascript
let myObject = {}
```

\
The easiest (and best) way to do this, is to use `Object.keys()`. 

\
This method turns all the keys in an object to an array, which we can then test the length of:

```javascript
let myObject = {}

console.log(Object.keys(myObject).length) // Returns 0!
```

\
But wait... Javascript is well known for how it handles types strangely - and new constructors return an object with length 0:

```javascript
let myFunction = function() {
    console.log("hello")
}
console.log(Object.keys(new myFunction()).length)
```

\
Fortunately, we can check if something is an object by checking its `constructor` property:

```javascript
console.log(function myFunction() {}.constructor) // Function
console.log({}.constructor) // Object
```

\
Therefore, we can check if an **object** is empty if its constructor is an `Object`, and it has an `Object.keys()` value of `0`:

```javascript
let empty = {}
let isObjEmpty = (obj) => {
    return Object.keys(obj).length === 0 && obj.constructor === Object
}

console.log(isObjEmpty(empty)); // Returns true, Object is empty!
```

\


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How to Determine Whether a JavaScript Object Is Empty

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