Ajax Hacks - download pdf or read online

By Bruce W. Perry

ISBN-10: 0596101694

ISBN-13: 9780596101695

Ajax, the preferred time period for Asynchronous JavaScript and XML, is likely one of the most crucial mixtures of applied sciences for internet builders to understand nowadays. With its wealthy grouping of applied sciences, Ajax builders can create interactive internet purposes with XML-based net providers, utilizing JavaScript within the browser to procedure the net server reaction. Taking entire good thing about Ajax, even though, calls for whatever greater than your standard "how-to" ebook. What it demands is Ajax Hacks from O'Reilly. This precious advisor offers direct, hands-on suggestions that take the secret out of Ajax's many services. every one hack represents a shrewdpermanent solution to accomplish a particular activity, saving you numerous hours of looking for the perfect solution. a wise selection of eighty insider information and tips, Ajax Hacks covers all the technology's finer issues. are looking to construct next-generation internet functions at the present time? This e-book can convey you ways. one of the multitude of issues addressed, it indicates you ideas for: utilizing Ajax with Google Maps and Yahoo Maps showing Weather.com information Scraping inventory prices Fetching postal codes development net kinds with auto-complete performance Ajax Hacks additionally includes a variety of complicated hacks for sped up internet builders. realize easy methods to create large, maintainable bookmarklets, tips to use client-side garage for Ajax functions, and the way to name a integrated Java item from JavaScript utilizing Ajax. The booklet even addresses top practices for trying out Ajax functions and bettering upkeep, functionality, and reliability for JavaScript code. the most recent in O"Reilly's celebrated Hacks sequence, Ajax Hacks neatly enhances different O'Reilly titles equivalent to Head Rush Ajax and JavaScript: The Definitive advisor.

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Us JavaScript Library Hack 63. us Visual Effects with an Ajax Application Hack 64. Create a Login Box That Shrugs Off Invalid Logins Hack 65. us Hack 66. Create an In-Place Editor Field Hack 67. Create a Web Form That Disappears When Submitted Chapter 9. Options and Efficiencies Hack 68. Fix the Browser Back Button in Ajax Applications Hack 69. Handle Bookmarks and Back Buttons with RSH Hack 70. Set a Time Limit for the HTTP Request Hack 71. Improve Maintainability, Performance, and Reliability for Large JavaScript Applications Hack 72.

Its onreadystatechange event listener (see the section "XMLHttpRequest" earlier in this chapter) will be defined as a function named handleResponse( ). The code calls the request object's open( ) and send( ) methods. What about Internet Explorer users? Microsoft Internet Explorerrelated blogs mentioned, at the time this book went to publication, that IE 7 would support a native XMLHttpRequest object. XMLHttpRequest object will not exist in the browser object model. XMLHTTP"); if (! send(null); } } This code fragment tests for the existence of the top-level window object ActiveXObject, thus signaling the use of Internet Explorer.

Url: The URL of the server program. asynch: Whether to send the request asynchronously or not. respHandle: The name of the function that will handle the response. Any fifth parameters, represented as arguments[4], are the data a POST request is designed to send. XMLHTTP"); if (! send(null); } } catch (errv) { alert( "The application cannot contact "+ "the server at the moment. message); } } The applications that use this code call the httpRequest( ) function with four or five (with POST requests) parameters.

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Ajax Hacks by Bruce W. Perry


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