Unique Random Numbers

This JavaScript picks up a number of unique random elements from an array.

For example; if you have an array myArray consisting of 10 elements and want to pick 5 unique random elements. Suppose initially myArray[3] is picked randomly, then myArray[3] should not be picked again.

If you want to pick 4 numbers, call the function like this :
pickNums(4)

Could be useful :-)

Here's an example :

Reload the page to see a set of another unique random numbers.