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Update isArrayLike.md

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Angelos Chalaris
2017-12-31 17:18:19 +02:00
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snippets/isArrayLike.md
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@ -2,17 +2,11 @@
Checks if the provided argument is array-like (i.e. is iterable). Checks if the provided argument is array-like (i.e. is iterable).
Use `Array.from()` and a `try... catch` block to check if the provided argument is array-like. Check that the object is not a function or `null` and that its `length` property is a non-negative integer below `Number.MAX_SAFE_INTEGER`.
```js ```js
const isArrayLike = arr => { const isArrayLike = val =>
try { val != null && typeof val != 'function' && val.length > -1 && val.length % 1 == 0 && val.length <= Number.MAX_SAFE_INTEGER;
Array.from(arr);
return true;
} catch (e) {
return false;
}
};
``` ```
```js ```js