關於JavaScript

Here is the function to find a random number between two numbers. To find 5 random numbers, call the function 5 times.

function getRand(high, low)
{
// e.g. high = 30, low = 10
var ran_number = Math.random() // give you a number between 0 and 0.9999999999999
ran_number = ran_number * (high - low + 1) // give you a number between 0 and 20.9999999999999
ran_number = Math.floor(ran_number) // round number, remove anything after the decimal
ran_number = ran_number + low // number between 10 and 30
return ran_number
}