Beginning JavaScript (4th Edition) by Paul Wilton, Jeremy McPeak

By Paul Wilton, Jeremy McPeak

The perennial bestseller returns with new info for utilizing the newest instruments and methods to be had with JavaScript
JavaScript is the definitive language for making the net a dynamic, wealthy, interactive medium. This consultant to JavaScript builds at the luck of earlier variants and introduces you to many new advances in JavaScript improvement. The reorganization of the chapters is helping streamline your studying method whereas new examples give you up to date JavaScript programming techniques.
You'll get all-new assurance of Ajax for distant scripting, JavaScript frameworks, JavaScript and XML, and the most recent positive factors in smooth net browsers. Plus, all of the featured code has been up-to-date to make sure compliance with the newest renowned net browsers.* Introduces you to the most recent services of JavaScript, the definitive language for constructing dynamic, wealthy, interactive websites* positive aspects new insurance of information varieties and variables, JavaScript and XML, Ajax for distant scripting, and well known JavaScript frameworks* deals up to date code that guarantees compliance with the preferred net browsers* comprises more desirable examples at the most recent JavaScript programming techniques
Continuing within the superlative culture of the 1st 3 variations, Beginning JavaScript, Fourth Edition, will get you in control on the entire new advances in JavaScript development.
Note: CD-ROM/DVD and different supplementary fabrics aren't incorporated as a part of e-book dossier.

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Extra resources for Beginning JavaScript (4th Edition)

Sample text

However, the question of which scripting language is more powerful and useful has no real answer. Pretty much everything that can be done in JavaScript can be done in VBScript, and vice versa. What Can JavaScript Do for Me? The most common uses of JavaScript are interacting with users, getting information from them, and validating their actions. For example, say you want to put a drop-down menu on the page so that users can choose where they want to go to on your web site. The drop-down menu might be plain old HTML, but it needs JavaScript behind it to actually do something with the user’s input.

You’ll learn much more about this in later chapters of the book. Initially, you’ll look at the essentials of JavaScript before the more advanced stuff. In the appendices of this book, you’ll find useful guides to the JavaScript language and how it interacts with the web browser. The majority of the web pages containing JavaScript that you create in this book can be stored on your hard drive and loaded directly into your browser from the hard drive itself, just as you’d load any normal file (such as a text file).

When you close the message box, the browser moves on to the next lines of code in the page, displaying the third paragraph and finally ending the web page.

Paragraph 3

Another important point raised by this example is the difference between setting properties of the page, such as background color, via HTML and doing the same thing using JavaScript. The method of setting properties using HTML is static: A value can be set only once and never changed again by means of HTML.

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