[Pas2js] TTextInputWidget_with_spellcheck how to detect misspelled word

[Mgr. Janusz Chmiel]

Is it possible to check misspelled word from Pascal source when
TTextInputWidget_with_spellcheck is being used?
I would like to warn user if he will type misspelled word. Sure, Browser
contain build in routine for underline word in red colour. But I want to do
my own warning. Is it possible please? Or there is no object for that.