How can I insert on_sent_ok attribute in the html form?

Hi all, please tell me how to insert an attribute for forms
Where you want to paste, tried to write in the submit input, displays an error. Tried to insert using onclick and onclick without still error

on_sent_ok: "ga('send', 'event', 'zayavka', 'zakazat')
August 19th 19 at 22:54
0 answer

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