I went through and put in the alerts like you suggested. It appears that my alert will only display once if I click on the submit button. I believe that every time I hit the submit button my alert should launch, right? See sample code below.
messagesend.onclick = function(){
if (fullnameform === null || fullnameform ==="" || emailform === null || emailform ==="" || subjectform === null || subjectform ==="" || bodyform === null || bodyform ==="")
{
if (fullname.value.length === 0){
alert('wrong');
show_error(fullname_msg, 'This field is required.');
messagesend.disabled = true;
}else if (fullname.value.match(/^[a-zA-Z]+$/) === null){
show_error(fullname_msg, 'Invalid name (letters only).');
}else{
removeChildren(fullname_msg);
}
if (email.value.length === 0){
show_error(email_msg, 'This field is required.');
}else if (email.value.match(/^[a-z0-9\\-\\.\\_\\+]{1,64}\\@(?:[a-z0-9\\-\\_]+)\\.(?:[a-z]{2,4}|[a-z]{2,3}\\.[a-z]{2,3})$/) === null){
show_error(email_msg, 'Invalid e-mail address.');
}else{
removeChildren(email_msg);
}
if (subject.value.length === 0){
show_error(subject_msg, 'This field is required.');
}else if (subject.value.match(/^[a-zA-Z]+$/) === null){
show_error(subject_msg, 'Invalid name (letters only).');
}else{
removeChildren(subject_msg);
}
if (body.value.length === 0){
show_error(body_msg, 'This field is required.');
}else if (body.value.match(/^[a-zA-Z]+$/) === null){
show_error(body_msg, 'Invalid name (letters only).');
}else{
removeChildren(body_msg);
}
return false;
}
}