Introduction to JavaScript - Part2
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absolute value. This will get a number 

between 0 and 1. As the time changes every millisecond you won't risk to get the
 same number 

twice (when calculating them fast behind each other). If you want to calculate m
any 

random numbers in a short time you should not use sin() alone. Then you would ge
t numbers 

following a sine- curve! This is not really random. But if you want to calculate
 a random 

number and let's say in 20 seconds again- this is a great function to do this. 
This is a random number:    
Here is the code for this example: 
<html> 
<head> 
<script language="JavaScript"> 
function RandomNumber() { 
today = new Date(); 
num= Math.abs(Math.sin(today.getTime())); 
return num;   
</script> 
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