Internally, there is no type called “array” in JavaScript. When used on an array, <code>typeof</code> returns <code>"object"</code> instead.
To check if something is an array, use <code>Array.isArray()</code> instead.
<pre><code class="lang-js">// `typeof` an array returns “object” because JS has no type called “array”.
typeof ['a', 'b', 'c'] // ⇒ "object"

// The array is treated like this equivalent object.
typeof { 0: 'a', 1: 'b', 2: 'c' } // ⇒ "object"

// Use `Array.isArray` instead of `typeof` to test if something is an array.
Array.isArray(['a', 'b', 'c']) // ⇒ true
Array.isArray({ 0: 'a', 1: 'b', 2: 'c' }) // ⇒ false
</code></pre>

Internally, there is no type called “array” in JavaScript. When used on an array, `typeof` returns `"object"` instead.

To check if something is an array, use `Array.isArray()` instead.

```js
// `typeof` an array returns “object” because JS has no type called “array”.
typeof ['a', 'b', 'c']                     // ⇒ "object"

// The array is treated like this equivalent object.
typeof { 0: 'a', 1: 'b', 2: 'c' }          // ⇒ "object"

// Use `Array.isArray` instead of `typeof` to test if something is an array.
Array.isArray(['a', 'b', 'c'])             // ⇒ true
Array.isArray({ 0: 'a', 1: 'b', 2: 'c' })  // ⇒ false
```


Dom Habersack's Blog

Dom Habersack's Blog

🔥 How to check if something is an array in JavaScript