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PowerBuilder® 9: Internet and Distributed Application Development by John D. Olson, Bill Green

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Client Events and Scripting

The Web DataWindow provides many of the DataWindow functions and events from a client/server application available in a browser. These events and functions are client-side JavaScript that execute within the browser, so their functionality is limited to what a browser can do. For example, a browser does not have a connection to a database, so you cannot use the ItemChanged event to validate a customer number by reading the customer table. The ItemChanged event can be used to make sure that a customer number was entered and that it is the correct number of characters. Table 7.6 contains a list of the client-side events that are triggered by the Web DataWindow. The names of these events are familiar because they are the ...

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