JavaScript Math Object
Examples
The Math object
The builtin Math object includes mathematical constants and functions. You
do not need to create the Math object before using it.
To store a random number between 0 and 1 in a variable called "r_number":
To store the rounded number of 8.6 in a variable called "r_number":
The Most Common Methods
NN: Netscape, IE: Internet Explorer, ECMA: Web Standard
Methods 
Explanation 
NN 
IE 
ECMA 
max(x,y) 
Returns the number with the highest value of x and y 
2.0 
3.0 
1.0 
min(x,y) 
Returns the number with the lowest value of x and y 
2.0 
3.0 
1.0 
random() 
Returns a random number between 0 and 1 
2.0 
3.0 
1.0 
round(x) 
Rounds x to the nearest integer 
2.0 
3.0 
1.0 
Round
How to round a specified number to the nearest whole number
<html>
<body>
<script type="text/javascript">
document.write(Math.round(7.25))
</script>
</body>
</html>

Random number
The random method returns a random number between 0 and 1
<html>
<body>
<script type="text/javascript">
document.write(Math.random())
</script>
</body>
</html>

Random number from 010
How to write a random number from 0 to 10, using the round and the random method.
<html>
<body>
<script type="text/javascript">
no=Math.random()*10
document.write(Math.floor(no))
</script>
</body>
</html>

Max number
How to test which of two numbers, has the highest value.
<html>
<body>
<script type="text/javascript">
document.write(Math.max(2,4))
</script>
</body>
</html>

Min number
How to test which of two numbers, has the lowest value.
<html>
<body>
<script type="text/javascript">
document.write(Math.min(2,4))
</script>
</body>
</html>

