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Math Example

Description: Illustrates the JavaScript syntax for the Math Object .

Syntax: var y = Math.sqrt(25); – Demonstrates how to use properties and methods of Math object.

Math Example Code:

< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html>
  <head>
    <title>Boolean</title>
    <script type="text/javascript" >
        //*****************************************************
        // Math Object
        //*****************************************************
 
        // NOTE: Math Object is not a constructor and you
        // do not have to instantiate by creating new object 
        // before you can use it      
        //*****************************************************
 
        // GENERAL SYNTAX:
        // Properties:
        //    var x = Math.PI; // Returns PI
        // Method:
        //    var x = Math.sqrt(25); // Returns the square root of 25
 
 
        //           Math Object Properties:
        //    Property 	Description
        //    E 	    Returns Euler's number (approx. 2.718)
        //    LN2 	    Returns the natural logarithm of 2 (approx. 0.693)
        //    LN10 	    Returns the natural logarithm of 10 (approx. 2.302)
        //    LOG2E 	Returns the base-2 logarithm of E (approx. 1.442)
        //    LOG10E 	Returns the base-10 logarithm of E (approx. 0.434)
        //    PI 	    Returns PI (approx. 3.14159)
        //    SQRT1_2 	Returns the square root of 1/2 (approx. 0.707)
        //    SQRT2 	Returns the square root of 2 (approx. 1.414)
 
        //            Math Object Methods
        //    Method 	Description
        //    abs(x) 	Returns the absolute value of x
        //    acos(x) 	Returns the arccosine of x, in radians
        //    asin(x) 	Returns the arcsine of x, in radians
        //    atan(x) 	Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
        //    atan2(y,x) 	Returns the arctangent of the quotient of its arguments
        //    ceil(x) 	Returns x, rounded upwards to the nearest integer
        //    cos(x) 	Returns the cosine of x (x is in radians)
        //    exp(x) 	Returns the value of Ex
        //    floor(x) 	Returns x, rounded downwards to the nearest integer
        //    log(x) 	Returns the natural logarithm (base E) of x
        //    max(x,y,z,...,n) 	Returns the number with the highest value
        //    min(x,y,z,...,n) 	Returns the number with the lowest value
        //    pow(x,y) 	Returns the value of x to the power of y
        //    random() 	Returns a random number between 0 and 1
        //    round(x) 	Rounds x to the nearest integer
        //    sin(x) 	Returns the sine of x (x is in radians)
        //    sqrt(x) 	Returns the square root of x
        //    tan(x) 	Returns the tangent of an angle
 
        //1. Example using property
        var x = Math.PI; // Returns PI
        document.write("PI = " + x);
        document.write("<br />");
 
        //2. Example using method
        var y = Math.sqrt(25); // Returns the square root of 25
        document.write("Square root of 25 = " + y);
        document.write("<br />");
 
 
 
    </script>
  </head>
  <body>
  </body>
</html>