1. Beginning JavaScript 4 th Edition

2. Chapter 1 Introduction to JavaScript and the Web

3. Chapter 1 Objectives  What is JavaScript?  What do you need in order to use JavaScript?  What can JavaScript do for you?

4. What is JavaScript?  A computer language: a series of instructions that tell the computer to do something

5. What is JavaScript?  An interpreted language rather than a compiled language

6. What is JavaScript?

7.  JavaScript is interpreted when the code is run. This interpretation has to be repeated every time the code is run.

8. What is JavaScript?  JavaScript is not Java

9. What do you need? All you need to create and use JavaScript is: A text editor, such as Notepad A Web browser, such as Firefox (FF) or Internet Explorer (IE) to view your pages in

10. What can JavaScript do for you?  Add interactivity to your Web pages  Help you obtain information from visitors to your Web site  Enable you to validate the information you receive

11. Adding JavaScript to your pages  Insert JavaScript code in HTML/XHTML pages between an opening and closing script tag:

12. Adding JavaScript to your pages  It’s good practice to include a type attribute in the opening script tag:

13. Adding JavaScript to your pages 

14. Adding JavaScript to your pages  document.bgColor="RED";

15. Adding JavaScript to your pages  // script block 1 document.bgColor="RED";

16. Using JavaScript JavaScript enables you to make your Web pages