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Actions

An action encapsulates a block of JavaScript code that is executed when a particular event is fired. An example is the SetProperty action, which allows setting the value of a property exposed by a client side component, or the InvokeMethod action, which enables invoking a method and pass parameters to it.

The Microsoft Ajax Library defines a third built-in action called PostBackAction. The purpose of this action is to postback the page (using the ASP.NET postback mechanism, i.e. a call to the __doPostBack function) in response to a particular event.

The following example illustrates the PostBack action; it is a simple HTML button that, when clicked, causes a postback of the page.

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