Javascript randomly shuffling numbers and assign to different variable
<p>I have 3 different numbers(say 20,40,60), I want to assign 4 of different random numbers  from 12 numbers(say 1 to 12), how could I do this? I knew how to use Javascript to generate a random order from 12 numbers but how could I also randomly assign these numbers to the 3 different numbers?</p>
