Download e-book for iPad: Ajax in Oracle JDeveloper by Deepak Vohra

By Deepak Vohra

ISBN-10: 3540775951

ISBN-13: 9783540775959

ISBN-10: 354077596X

ISBN-13: 9783540775966

Asynchronous JavaScript and XML (Ajax) is an online process used to move info among a browser and server asynchronously with out posting the internet web page to the server. "Asynchronously" signifies that the processing of the internet web page keeps whereas the Ajax request is distributed to the server and a reaction is bought from the server. the net web page, or section(s) of the net web page, is refreshed with the Ajax reaction with out reposting the net web page. Ajax has the next merits over non-Ajax internet applications.

- decreased reaction time and decreased server load, because the entire web content isn't really reposted.

- decreased bandwidth of net purposes as merely facts is transferred and the HTML structure is utilized within the browser.

- Separation of information, structure and elegance.

The e-book covers internet seek and RSS Feed with Ajax in addition to shape validation with Ajax frameworks for Java, JSP, JSF, and personal home page. It discusses utilizing Ajax in Oracle JDeveloper and is IDE established. JDeveloper has the subsequent benefits over Eclipse IDE.

- JDeveloper 11g offers an built-in JavaScript Editor for Ajax/Web improvement.

- It additionally presents a personal home page extension.

- JDeveloper has a integrated aid for JSF and for JDBC.

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Additional info for Ajax in Oracle JDeveloper

Sample text

2. Open a XMLHttpRequest request. 3. Register a callback method to be invoked when the request is complete. 4. Send a XMLHttpRequest request. 5. Process the XML response and set HTML page content. An XMLHttpRequest request is initiated from an HTML form that has input fields for creating a catalog entry. The XMLHttpRequest is initiated from the Catalog Id field, which is required to be validated. A JavaScript function, validateCatalogId() is invoked with onkeyup event. jsp add an input form with the

element.

When the request is complete, the showResponse function gets invoked. The function registered with the onComplete property gets invoked with an argument containing the XMLHttpRequest object and an argument containing the HTTP response header. Request( url, { method: 'get', parameters: pars, asynchronous: true, onComplete: showResponse }); } function showResponse(xmlHttpRequest, responseHeader) {//Process Http response and update input form } The showResponse function retrieves the XML response from the server and updates the input form.

12 New Database Connection Connection AjaxConnection in Databases window is available as datasource with JNDI name jdbc/AjaxConnectionDS. xml configuration file we need to add the following element. DataSource Container Select File>Save All to save the Ajax project. xml file should have a managed data source configured with JNDI jdbc/AjaxConnectionDS. A managed-data-source element gets added to the data sources file by default when the JDBC connection is configured in Databases window.

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Ajax in Oracle JDeveloper by Deepak Vohra


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