i have form:
<html> <form name=“test” action=“test.php”> <input type=“text” name=“surname” pattern=“.{3,}>” <input type=“submit” value=“send”> </form> i want “surname” field has @ least 3 characters , reason added pattern attribute (i use html5) in way check every time user clicks "send" button while want check every time user edits "surname" field without using javascript html5. possible?
you need add client-side javascript form before php processing,
to check input sequence or pattern of letters , numbers need add regular expression check value of input
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