javascript - How to create KeyboardEvent with specific keyCode -


i'm trying simulate keydown event in unit test (angular2/typescript). not have debugelement available, i'm trying emit event on native element. problem have how define keycode when creating keyboardevent. keycode not defined part of keyboardeventinit definition, , on keyboardevent exposed readonly property.

simply adding keycode property (and set obj type ) doesn't work either.

    let elm = <htmlelement>content.nativeelement;     let ev = new keyboardevent('keydown', {         code: '123',         //keycode: 345,         key: 'a',     });     elm.dispatchevent(ev);

any suggestions ?

edit: according mdn link, keycode deprecated , should not used, instead 'code' should used. https://developer.mozilla.org/en-us/docs/web/api/keyboardevent/keycode


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