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In This ppt you see, How a Ajax application is create using prototype.js and jsp.
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AJAX Changing the shape of the Web
Tushar Chauhan
5th CE-1[ Roll No-16 ]
Ms.V.A.Parekh
Prepaid By. Guided By.
Lect In CE/IT Dept .
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Introduction
• What is AJAX ?• AJAX Request-Response Cycle.• Working of AJAX• Applications of AJAX
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WHAT IS AJAX?
• Asynchronous Java script And XML.• It is not itself a technology but a group pf
technologies such as• HTML• Java script• CSS• XML• DOM (document object model)
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AJAX Request-Response Cycle.
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How AJAX is Different?
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Working of AJAX
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Why we Use AJAX / Benefits of AJAX
• interface is much more responsive .• small part of the page is transferred at a time .• classic web application -content only – what is
between the <body> tags -only one connection thread .
• With AJAX, you only have to load the basic scripts and CSS files, and request the rest as content, through multiple connections .
• Waiting time is reduced .
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Advantages of AJAX
• Time saving• Maximum Usage of Bandwidth • Browser and platform independent applications
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Disadvantage of AJAX.
• AJAX-powered application can increase development time and costs .
• existing page conflicts -used to navigate and create bookmarks in modern browsers .
• The biggest concern with AJAX is accessibility .• Turn off JavaScript support -fail-safe solution exists
for those users .• Actual XMLHttpRequest object itself-only use it to
access information from the host that served the initial page .
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Why we use AJAX in our project ?
• Involves heavy server requests .• With multiple web forms that submit data to the server .• heavy traffic .• Display large amounts of data in a sequential manner
without refreshing the entire page .• Users interact frequently .• Application response time is a concern • Loading times have to be as short as possible
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Where not to use AJAX
• Plain, static HTML pages .• Application must be accessed by older browsers .• Loading times - bandwidth usage is not a primary
concern .• Cost - time factors are paramount for the delivery of
your project and your .• Development team cannot afford to build a complex
AJAX framework .
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AJAX Using Jsp
• Introduction-rapidly develop , easily maintain, information-rich, dynamic Web pages.
• How to use Ajax in JSP
• 1. Ajax framework for java• 2. Simple Ajax script for JSP
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Ajax framework
• Using prototype.js• Dojotoolkit• Rico framework
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Using Prototype.js
• http://prototypejs.org/download• <script type="text/javascript"
src="/path/to/prototype.js"></script> • Create one jsp file. like ajax3.jsp
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Second jsp file hello1.jsp
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Supported Web Browser
• The XMLHttpRequest object is supported • Internet Explorer 5.0+• Safari 1.2• Mozilla 1.0 / Firefox• Opera 8+• Google Chrome• Netscape 7.
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Applications of AJAX / Who Using AJAX
• Google’s all product• Google Maps• Asynchronous downloads • Tiles and Layout • Stanford University / http://www.stanford.edu/• Orkut.
