Start of main content## Recommended snippets

Checks if the given value is equal to negative zero (`-0`

).

- Check whether a passed value is equal to
`0`

and if`1`

divided by the value equals`-Infinity`

.

`const isNegativeZero = val => val === 0 && 1 / val === -Infinity;`

```
isNegativeZero(-0); // true
isNegativeZero(0); // false
```

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### Percentile of matches

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Calculates the percentage of numbers in the given array that are less or equal to the given value.

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Checks if the given value is a number.

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Checks if the given number falls within the given range.