jsf - Check if values in a form have been changed -


good afternoon!

i have situation , don't know how solve it!

i'm using primefaces , have fieldset several fields , commandbutton called "save" disabled inside it. need enable commandbutton if value of field modified. know there's "onchange" event, have many fields, know if there's way check whole form, mean fields @ once, not field field!

i'm using primefaces 5.1

ps: if wrote wrong please sorry, ask me , try put in other words!

thank in advance


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