LECTURE 9Javascript

1. Why study JavaScript?

1.1. •JavaScript is the world's most popular programming language.•JavaScript is the programming language of the Web.•JavaScript is easy to learn.

1.1.1. Variables

1.1.1.1. var p1; var p2, p3;var p4 = 10;

1.1.2. Reserved! Войти в систему CanvasInstructure

2. What can JavaScript do?

2.1. Unary operators

2.1.1. ++ (increment); -- (decrement); + (unary plus) - (unary minus) ! (logical NO)

2.2. Other operators

2.2.1. comparison <; <=; >; >=

2.2.2. logical && (and); || (or)

2.2.3. conditional (If), (switch)

3. Data Types

3.1. Integers 123 Strings “text” Booleans true / false Undefined undefined/null Objects and massive Functions