javascript - form.onsumbit subclass -
i write smart extension chrome , inject javascript inside frame in frameset page...
in 1 of frame want replace onsumbit form. want analyze (x, y) values image type field before make submit.
i can find element name form. can onsubmit property. how make check sending values before submit?
thanks.
hm, this?
var formel = document.getelementbyid("form1"); var originalonsubmit = formel.onsubmit; formel.onsubmit = function() { if(all_ok) { originalonsubmit(); } else { return false; } }
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