In- Built Math function in java script..

In –Built Math functions
in Java script

Math is one of JavaScript's global or standard built-in objects, and can be used anywhere you
can use JavaScript.
It contains useful constants like π and Euler’s constant and functions such as floor(), round(),
and ceil().
Example
The following example shows how to use the Math object to write a function that calculates the
area of a circle

Math.abs(x): Returns the absolute value of a number x.
 Math.abs(-5); // Returns 5
Math.ceil(x): Returns the smallest integer greater than or equal to a number x.
Math.ceil(4.3); // Returns 5
Math.floor(x): Returns the largest integer less than or equal to a number x.
Math.floor(4.7); // Returns 4

Math.round(x): Returns the value of a number x rounded to the nearest integer.
 Math.round(4.5); // Returns 5
Math.max(x1, x2, ...): Returns the largest of zero or more numbers.
Math.max(10, 5, 8); // Returns 10
Math.min(x1, x2, ...): Returns the smallest of zero or more
numbers.
Math.min(10, 5, 8); // Returns 5

Math.pow(x, y): Returns the base to the exponent power, that is, x raised to the power y.
 Math.pow(2, 3); // Returns 8
Math.sqrt(x): Returns the square root of a number x.
Math.sqrt(9); // Returns 3
Math.random(): Returns a random floating-point number between
0 (inclusive) and 1 (exclusive).
Math.random(); // Returns a random number between 0 and 1

Math.PI: A property representing the ratio of the
circumference of a circle to its diameter,
approximately equal to 3.14159.
 Math.PI; // Returns 3.141592653589793

<body>
<h1>JavaScript Math Functions</h1>

<script>
// Using Math functions
document.getElementById("output").innerHTML +=
"Math.abs(-5): " + Math.abs(-5) + " ";
"Math.ceil(4.3): " + Math.ceil(4.3) + " ";
"Math.floor(4.7): " + Math.floor(4.7) + " ";
"Math.round(4.5): " + Math.round(4.5) + " ";
"Math.max(10, 5, 8): " + Math.max(10, 5, 8) + " ";
"Math.min(10, 5, 8): " + Math.min(10, 5, 8) + " ";

"Math.pow(2, 3): " + Math.pow(2, 3) + " ";
"Math.sqrt(9): " + Math.sqrt(9) + " ";
"Math.random(): " + Math.random() + " ";
"Math.PI: " + Math.PI + " ";
</script>
</body>
</html>

In- Built Math function in java script..

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