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javascript/snippets/is-array-like.md

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+---
+title: Value is array-like
+type: snippet
+tags: [type,array]
+cover: colorful-plastic
+dateModified: 2020-10-20T23:02:01+03:00
+---
+
+Checks if the provided argument is array-like (i.e. is iterable).
+
+- Check if the provided argument is not `null` and that its `Symbol.iterator` property is a function.
+
+```js
+const isArrayLike = obj =>
+  obj != null && typeof obj[Symbol.iterator] === 'function';
+```
+
+```js
+isArrayLike([1, 2, 3]); // true
+isArrayLike(document.querySelectorAll('.className')); // true
+isArrayLike('abc'); // true
+isArrayLike(null); // false
+```