Javascript - Program the Web
This course covers the basics of programming in Javascript. Work your way through the videos and we'll teach you everything you need to know to make your website more responsive!

Math

Lesson 8
Author : Mike Dane
Last Updated : October, 2017


Code

Copydocument.write( 2 * 3 + "<br>" );       // Basic Arithmetic: +, -, /, *
document.write( 2**3 + "<br>" );        // Exponents
document.write( 10 % 3 + "<br>" );      // Modulus Op. : returns remainder of 10/3
document.write( 1 + 2 * 3 + "<br>" );   // order of operations
document.write(10 / 3.0 + "<br><br>");  // int's and doubles


var num = 10;
num += 100;                              // +=, -=, /=, *=
document.write(num + "<br>");

num++;
document.write(num + "<br><br>");

// Math class has useful math methods
document.write( Math.pow(2, 3) + "<br>" );
document.write( Math.sqrt(144) + "<br>" );
document.write( Math.round(2.7) + "<br>" );