Function trim

trim(text?: null | string, emptyAsNull?: boolean): undefined | null | string
Returns a string that trimmed from the given string
Parameters
- Optionaltext: null | string
  the string to trim
- OptionalemptyAsNull: boolean
  whether to return null if the trimmed result is empty
Returns undefined | null | string
the trimmed string value from the given string
Author
David Hsing
Example
```
trim("foobar", true);    // 'foobar'
```