Ajax For Dummies by Steve Holzner

By Steve Holzner

Ajax is brief for “Asynchronous JavaScript+CSS+DOM+XMLHttpRequest.”
Even if you happen to weren’t intimidated ahead of, that tidbit is maybe sufficient to make you achieve for the Excedrin. simply achieve for Ajax For Dummies as a substitute. With display pictures, genuine code and factors, and reside sites the place you'll discover Ajax purposes doing their factor, it's going to have you ever utilizing Ajax to create internet functions that glance an act like computer purposes very quickly. With Ajax, you could accelerate and freshen up your net purposes. consumers at your on-line shop can fill their carts with out expecting a number of web page refreshes. Searchers in your websites can get rapid effects at the similar page.
This consultant takes you on a journey of the way Ajax is used this present day, whole with examples of Ajax functions in motion, equivalent to an Ajax-enabled Yahoo! seek or an Ajax-based chat software. Then it provides fundamentals on utilizing JavaScript. After that you simply dive in and get information on:* Writing a few Ajax, interactive mouseovers utilizing Ajax, passing information to the server with GET or submit, and extra* Connecting to Google for a reside seek* utilizing unfastened Ajax frameworks so that you don’t need to begin from scratch, together with Ajax Gold (written particularly for this book), AJAXLib, and grabbing XML with libXmlRequest* all types of Ajax options, comparable to utilizing Ajax for drag-and-drop operations, pop-up menus, downloading photos behind the curtain, and extra* utilizing SACK (simple AJAX code kit), deciphering XML with Sarissa, and developing visible results with Rico* dealing with XML int Ajax functions* operating with cascading variety sheets (CCS) in Ajax, together with developing the types, exhibiting a menu, styling textual content, dealing with colours and backgrounds, and extra* operating with Ajax and PHP
Complete with a better half site, loose Ajax frameworks, and pattern code you should use, Ajax for Dummies is your pleasant consultant to making actually effortless net sites!
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Extra info for Ajax For Dummies

Example text

Here’s an overview of how Ajax works: 1. In the browser, you write code in JavaScript that can fetch data from the server as needed. 2. When more data is needed from the server, the JavaScript uses a special item supported by browsers, the XMLHttpRequest object, to send a request to the server behind the scenes — without causing a page refresh. The JavaScript in the browser doesn’t have to stop everything to wait for that data to come back from the server. It can wait for the data in the background and spring into action when the data does appear (that’s called asynchronous data retrieval).

There’s an onload attribute for the element that you can use like this: Getting started with JavaScript

Using a div

But what do you put into the quotation marks here? What inline script can you use to call the displayText function? All you have to do to call Chapter 2: It’s All About JavaScript a function is to give its name, followed by a pair of parentheses (if you want to pass data to the function, you put the data between the parentheses, as I show you a little later): Getting started with JavaScript