<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Callback Function Objects Implementing handleEvent()</title> </head> <body> <p> When a JS callback is a function, it should be called. If the function has another function as its <code>handleEvent</code> property, that function should <em>not</em> be called. </p> <p id="console"></p> <script src="../../resources/js-test.js"></script> <script type="text/javascript" charset="utf-8"> window.jsTestIsAsync = true; // This function should be called. var callback = function(event) { testPassed("The callback function was called directly."); finishJSTest(); }; // This function should not be called. callback.handleEvent = function(event) { testFailed("The callback function's handleEvent property was called instead of the function itself."); finishJSTest(); }; // Database is one of several uses of JS Callbacks var db = openDatabase("callback-function-with-handle-event-test", "", "Test for callback functions that implement a handleEvent() method.", 1); db.changeVersion(db.version, "1.0", callback); </script> </body> </html>