Travis build: 743 [ci skip]

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Travis CI
2017-12-31 15:49:44 +00:00
parent 5869c4a78e
commit 7f3d62a41e
3 changed files with 21 additions and 21 deletions

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@@ -4088,24 +4088,22 @@ isArray([1]); // true
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
const isArrayLike = arr => {
try {
Array.from(arr);
return true;
} catch (e) {
return false;
}
};
const isArrayLike = val =>
val != null &&
typeof val != 'function' &&
val.length > -1 &&
val.length % 1 == 0 &&
val.length <= Number.MAX_SAFE_INTEGER;
```
<details>
<summary>Examples</summary>
```js
isArrayLike(document.querySelector('.className')); // true
isArrayLike(document.querySelectorAll('.className')); // true
isArrayLike('abc'); // true
isArrayLike(null); // false
```