Supporting Three Event Models at Once
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Apple Inc.
2006

Abstract:

Events make the client-side JavaScript world go ‘round. After a Web page loads, the only way a script can run is in response to a system or user action. While simple events have been part of the JavaScript vocabulary since the first scriptable browsers, more recent browsers implement robust event models that allow scripts to process events more intelligently. The problem, however, is that in order to support a wide range of browsers you must contend with multiple advanced event models. Three, to be exact.