JScript Regex - extract 10-digit VAT number with seperators procedeed by a substring

I need to extract VAT number that consists of 10 digits seperated by a dash, space or not seperated and procedeed by substring 'VAT'. VAT number never starts start with zero and is always followed by a space.

reg = new RegExp('[\d -]{10}\\s','ig');
str = ('sdfgzdfvzdfv/9/2020 VAT Invoice 16-09-2020 Citsxc zzzzw34 224- Iscvcge date 16.09.2020 VAT Terms 34 of payment: 123-456-78-90 *')
expected result: '123-456-78-90'

Thank you.

You may use
```js
var rx = RegExp('VAT.*?([1-9](?:[\\s-]?\\d){9})(?!\\S)','i');
```
See the [regex demo][1]. Details:

- `VAT` - a `VAT` substring
- `.*?` - any 0+ chars other than line break chars, as few as possible
- `([1-9](?:[\s-]?\d){9})` - Group 1:
- `[1-9]` - a non-zero digit
- `(?:[\s-]?\d){9}` - 9 occurrences of a whitespace or hyphen and then a digit
- `(?!\S)` - a right-hand whitespace boundary.

JScript code demo:
```js
var rx = RegExp('VAT.*?([1-9](?:[\s-]?\\d){9})(?!\\S)','i');
var string=('sdfgzdfvzdfv/9/2020 VAT Invoice 16-09-2020 Citsxc zzzzw34 224- Iscvcge date 16.09.2020 VAT Terms 34 of payment123-456-78-90 ');
var m = string.match(rx);
if (m) {
WScript.Echo(m[1]);
} else {
WScript.Echo("No match!");
}
```
Output: `123-456-78-90`.

[1]:

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