Math Object in JavaScript

In our previous tutorial, we created a simple calculator using JavaScript. In this tutorial, you will learn advanced Math functions to perform scientific operations of the calculator using JavaScript. To perform mathematical tasks on web pages, we use JavaScript Math object. This object allows us to perform different mathematical work and calculation by using just one simple function.

Math Functions

In JavaScript there are sevral mathematical function some are given below:

Random()
Max()
Min()
Floor()
Round()
Abs()
Log()
Cos()
Sin()
Tan()
Sqrt()

Math.random()

This function returns 1 or 0 randomly.

<script>
     var x=Math.random();
     alert(x);
</script>

var x=Math.random();

alert(x);

</script>

Result

0.4105918002502311

1	0.4105918002502311

Math.Max()

This function returns maximum value from its given parameters.

<script>

     var x=Math.max(0, 150, 30, 20, -8, -200);
     alert(x);

</script>

var x=Math.max(0, 150, 30, 20, -8, -200);

alert(x);

</script>

Result

150

150

Math.Min()

This function returns minimum value from its given parameters.

<script>

     var x=Math.min(0, 150, 30, 20, -8, -200);
     alert(x);

</script>

var x=Math.min(0, 150, 30, 20, -8, -200);

alert(x);

</script>

Result

-200

-200

Math.floor()

This function rounds a number down to the nearest integer.

<script>

     var x=Math.floor(4.7);
     alert(x);

</script>

var x=Math.floor(4.7);

alert(x);

</script>

Result

4

Math.Round()

This function rounds a number to the nearest integer.

<script>

     var x=Math.round(4.7);
     alert(x);

</script>

var x=Math.round(4.7);

alert(x);

</script>

Result

5

Math.ceil()

This function rounds a number up to the nearest integer.

<script>

     var x=Math.ceil(4.7);
     alert(x);

</script>

var x=Math.ceil(4.7);

alert(x);

</script>

Result

5

Math.Abs()

This function returns the absolute value of given parameter.

<script>

     var x=Math.abs(4);
     alert(x);

</script>

var x=Math.abs(4);

alert(x);

</script>

Result

4

Math.log()

This function returns the log of the given parameter.

<script>

     var x=Math.log(29);
     alert(x);

</script>

var x=Math.log(29);

alert(x);

</script>

Result

3.367295829986474

1	3.367295829986474

Math.tan()

This function returns the tangent of the given parameter.

<script>

     var x=Math.tan(7);
     alert(x);

</script>

var x=Math.tan(7);

alert(x);

</script>

Result

0.8714479827243187

1	0.8714479827243187

Math.sin()

This function returns the sin of the given parameter.

<script>

     var x=Math.sin(4);
     alert(x);

</script>

var x=Math.sin(4);

alert(x);

</script>

Result

-0.7568024953079282

1	-0.7568024953079282

Math.cos()

This function returns the cos of the given parameter.

<script>

     var x=Math.cos(7);
     alert(x);

</script>

var x=Math.cos(7);

alert(x);

</script>

Result

0.7539022543433046

1	0.7539022543433046

Math.sqrt()

This function returns the square of the given parameter.

<script>

     var x=Math.sqrt(45);
     alert(x);

</script>

var x=Math.sqrt(45);

alert(x);

</script>

Result

6.708203932499369

1	6.708203932499369