ssWindow.center(); // this doesn't work
... because the center() method is executed over a jQuery DOM element, instead of a Window instance.
ssWindow.kendoWindow.center(); // this doesn't work either
, you will end up with the case above, because Kendo UI widget initializer methods return jQuery DOM elements, not widget instances.
Please refer to the documentation below, which deals with getting widget references and executing methods, and let me know if there is anything unclear, so that we can improve it if needed.
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