Ho provato a fare la validazione della mia pagina e ho ricevuto questi errori:
1)
Error Line 21, Column 3: "DOCTYPE" declaration not allowed in instance
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/…
2)
Error Line 23, Column 67: document type does not allow element "html" here
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
3)
Error Line 134, Column 69: required attribute "action" not specified
<form id="register" method="post" onsubmit="return validazione()">
4)
Error Line 151, Column 40: end tag for "select" which is not finished
<td> <select id="giorno"></select>
5)
Error Line 152, Column 63: end tag for "select" which is not finished
<select id="mese" onchange="controllaData()"></select>
6)
Error Line 153, Column 63: end tag for "select" which is not finished
<select id="anno" onchange="controllaData()"></select>
chi mi li puo spiegare il motivo di questi errori?
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