# Integer

A base 10 number with no fractional component.

```
integer = "0" / (["-"] non-zero *digit)
digit = "0" / positive-digit
non-zero = "1" / "2" / "3" / "4" / "5" / "6" / "7" / "8" / "9"
```

Leading zeros are not allowed, except for the integer 0, which is
represented as the string `0`

. Negative values are marked with a leading “-”
character (UNICODE `0x2D`

HYPHEN-MINUS).

Numeric values such as Infinity and NaN are not permitted.

The following examples are all valid integer values:

```
100
0
-200
```

The integer maximum size is dependent on the implementation.

© Crown copyright released under the Open Government Licence.