Ajax Programming for the Absolute Beginner

Ajax Programming for the Absolute Beginner

Language: English

Pages: 320

ISBN: 1598635646

Format: PDF / Kindle (mobi) / ePub

Ajax Programming for the Absolute Beginner

Language: English

Pages: 320

ISBN: 1598635646

Format: PDF / Kindle (mobi) / ePub


Learn Ajax the easy way! If you are new to programming with Ajax and are looking for a solid introduction, this is the book for you. Developed by computer science instructors, books in the "for the absolute beginner" series teach the principles of programming through simple game creation. You will acquire the skills that you need for more practical programming applications and will learn how these skills can be put to use in real-world scenarios. Best of all, by the time you finish the book you will be able to apply the basic principles you've learned to the next programming language you tackle.

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Functions.................................................. 67 Organizing Code Statements into Functions ...................................................... 67 Controlling Function Execution ............................................................................. 68 Developing Applications That Respond to Events...................................................... 71 Developing Event-Driven Scripts............................................................................. 71 Working

typos or missing statements. HIN T You will find a copy of this application’s source code files on the book’s companion website, located at http://www.courseptr.com/downloads. SUMMARY This chapter provided an overview of JavaScript, giving you an understanding of basic JavaScript programming concepts required to support the development of Ajax applications. You learned about JavaScript’s origins and issues surrounding browser compatibility. You also learned how to create and embed JavaScripts

example demonstrates how to set up a dense array named supplies. This array is made up of six items. Chapter 3 • A Deeper Dive into JavaScript 81 supplies = new Array("pen", "paper", "ink", "pencil", "tape", "staples"); Note that when created this way, an array is made up of a comma-separated list of items enclosed inside parentheses, preceded by the name of the array. This array is functionally equivalent to the following array. supplies = new Array(6); supplies[0] = "pen"; supplies[1] =

following statement to the head section of the HTML page. 106 Ajax Programming for the Absolute Beginner The rest of the steps involved in building this application involve the addition of JavaScript statements and functions belonging to this script. Step 5: Creating an XMLHttpRequest Object Since the Ajax Story of the Day application involves

another by a blank space. Understanding the Types of Elements in Use Even in an XML file, a number of different types of nodes can be used. In addition to different types of nodes, XML lets you assign attributes to nodes and supports a number of other elements as outlined in Table 7.1. TABLE 7.1 JAVASCRIPT PROPERTIES THAT SUPPORT XML DOM TREE ACCESS Value Property Description 1 2 3 4 5 NODE_ELEMENT NODE_ATTRIBUTE NODE_TEXT NODE_CDATA_SECTION NODE_ENTITY_REFERENCE 6 7 NODE_ENTITY

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