jquery auto check form

$(document).ready(function() {

// < form kontrol - BAŞLA
$('#memberEmailChangeForm').submit(function() {
$('#memberEmailChangeForm .error').remove();
var hasError = false;
$('.requiredField').each(function() {
if(jQuery.trim($(this).val()) == '') {
var labelText = $(this).prev('label').text().replace(' *','');
var labelText = labelText.replace(':',' ');
$(this).parent().append(''+labelText+' is a required field.');
hasError = true;
}else if(! isValidEmailAddress($(this).val() ) ) {
$(this).parent().append(' is not valid.');
hasError = true;

}
});
if(hasError) {
return false;
}
});
// > form kontrol - BİTİR
});

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