Function randomElements

randomElements<E>(array?, size?): E[] | undefined
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 E[] | undefined
a random element array with the specified length within the given array
Example
```
randomElements(['1', '2', '3'], 2);
```