JavaScript Math Object
The Math object allows you to perform common mathematical
tasks.
Examples
round()
How to use round().
random()
How to use random() to return a random number between 0 and 1.
max()
How to use max() to return the number with the highest value of two specified numbers.
min()
How to use min() to return the number with the lowest value of two specified numbers.
Complete Math Object Reference
For a complete reference of all the properties and methods that can be used with
the Math object, go to our
complete Math object reference.
The reference contains a brief description and examples of use for each
property and method!
Math Object
The Math object allows you to perform common mathematical tasks.
The Math object includes several mathematical values and functions. You
do not need to define the Math object before using it.
Mathematical Values
JavaScript provides eight mathematical values (constants) that can be
accessed from the Math object. These are: E, PI, square root of 2, square root
of 1/2, natural log of 2, natural log of 10, base-2 log of E, and base-10 log of
E.
You may reference these values from your JavaScript like this:
Math.E
Math.PI
Math.SQRT2
Math.SQRT1_2
Math.LN2
Math.LN10
Math.LOG2E
Math.LOG10E
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Mathematical Methods
In addition to the mathematical values that can be accessed from the Math object
there are also several functions (methods) available.
Examples of functions (methods):
The following example uses the round() method of the Math object to
round a number to the nearest integer:
document.write(Math.round(4.7));
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The code above will result in the following output:
The following example uses the random() method of the Math object to
return a random number between 0 and 1:
document.write(Math.random());
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The code above can result in the following output:
The following example uses the floor() and random() methods of the Math object to
return a random number between 0 and 10:
document.write(Math.floor(Math.random()*11));
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The code above can result in the following output:
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