The wider trend of Ajax programming similarly exploits this strength. Call Options Object The recommended syntax is to make use of a call options object that specifies the callback function and other options.
Loading new page content or submitting data to the server via Ajax without reloading the page for example, a social network might allow the user to post status updates without leaving the page. Depending on your style it may be easier to read, but more importantly it allows you to specify extra call options.
Validating input values of a Web form to make sure that they are acceptable before being submitted to the server. In this case str will contain the String that getData returns.
First, scripts run in a sandbox in which they can only perform Web-related actions, not general-purpose programming tasks like creating files.
Animation of page elements, fading them in and out, resizing them, moving them, etc. DWR solves this problem by introducing a callback function that is called when the data is returned from the server.
Interactive content, for example games, and playing audio and video. The biggest challenge in creating a remote interface to match Java code across AJAX is the usually asynchronous nature of AJAX, compared to the synchronous nature of a normal Java call.
Either by appending a call options object or a callback function to the parameter list. The Web server is another common host environment.
If you want to be notified of the completion of a server-side method that returns void then you can include a callback method.
DOMString objects are inserted as. Visualize Execution Live Programming Mode.Download