Download Ajax in Oracle JDeveloper by Deepak Vohra PDF

By Deepak Vohra

Asynchronous JavaScript and XML (Ajax) is an online procedure used to move facts 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 maintains whereas the Ajax request is shipped to the server and a reaction is got from the server. the internet web page, or section(s) of the net web page, is refreshed with the Ajax reaction with out reposting the internet web page. Ajax has the subsequent merits over non-Ajax internet applications.

- diminished reaction time and diminished server load, because the whole online page isn't reposted.

- lowered bandwidth of net purposes as basically facts is transferred and the HTML layout is utilized within the browser.

- Separation of information, layout and elegance.

The ebook covers net seek and RSS Feed with Ajax in addition to shape validation with Ajax frameworks for Java, JSP, JSF, and Hypertext Preprocessor. It discusses utilizing Ajax in Oracle JDeveloper and is IDE established. JDeveloper has the next benefits over Eclipse IDE.

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

- It additionally presents a personal home page extension.

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

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Extra info for Ajax in Oracle JDeveloper

Example text

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. The input form has an input field for creating a catalog entry in Oracle database table CATALOG. The Catalog Id field is for specifying the Catalog Id and is the field we need to validate. 30 2 Developing an Ajax Web Application


11 Configuring a Connection A node for the connection gets added to IDE Connections node in Databases window as shown in Fig. 12. The Catalog table may be modified if required using the SQL Worksheet. 28 2 Developing an Ajax Web Application Fig. 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.

For example, a non-prototype JavaScript obtains a form field value as follows. value; The $F() function reduces the code to retrieve the form filed value as shown below. 3 $A() function The $A()function is used to create an Array object from a node list or an enumerable list. For example, an Array object may be created from a node list object and the Array object navigated to retrieve node values. In the following listing the HTML value of the first journal node in an XML document is retrieved with the $A() function.

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Catalog Id: