Function randomElements

randomElements<E>(array?: E[], size?: number): undefined | E[]
Returns a random element array with the specified length within the given array
Type Parameters
- E
Parameters
- Optionalarray: E[]
  the array to random
- Optionalsize: number
  the size to generate
Returns undefined | E[]
a random element array with the specified length within the given array
Author
David Hsing
Example
```
randomElements(['1', '2', '3'], 2);
```