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Published byTamsin Maxwell Modified over 8 years ago
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Beginning JavaScript 4 th Edition
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Chapter 1 Introduction to JavaScript and the Web
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Chapter 1 Objectives What is JavaScript? What do you need in order to use JavaScript? What can JavaScript do for you?
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What is JavaScript? A computer language: a series of instructions that tell the computer to do something
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What is JavaScript? An interpreted language rather than a compiled language
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What is JavaScript?
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JavaScript is interpreted when the code is run. This interpretation has to be repeated every time the code is run.
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What is JavaScript? JavaScript is not Java
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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
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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
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Adding JavaScript to your pages Insert JavaScript code in HTML/XHTML pages between an opening and closing script tag:
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Adding JavaScript to your pages It’s good practice to include a type attribute in the opening script tag:
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Adding JavaScript to your pages
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Adding JavaScript to your pages document.bgColor="RED";
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Adding JavaScript to your pages // script block 1 document.bgColor="RED";
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Using JavaScript JavaScript enables you to make your Web pages
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