ozoro,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
</head>
<body>
<style>
.text-error-input {
border: 1px red solid !important;
background: #FFB647 !important;
}
</style>
<form action="http://">
<input type="text" id="changeFieldName" name="changeFieldName" value="" />
<input type="email" name="email_author_vo" id="ticket-author-email" class="form-control input__no-radius" placeholder="Ваш Email" value="">
<input name="" type="submit" value="send">
</form>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script>
<script>
$(function(){
var isCorrectName=function() {
$(this).toggleClass('text-error-input', !/^[a-zA-Z_0-9 ]/.test(this.value));
}
$("#changeFieldName").on("input", isCorrectName);
var isCorrectEmail=function() {
var patternEmail = /[a-z\d-]+([\.\_]?[a-z\d-]+)+@[a-zа-я\d-]+(\.[a-zа-я]{2,6})/g;
$(this).toggleClass('text-error-input', !patternEmail.test(this.value));
}
$("#ticket-author-email").on("blur", isCorrectEmail);
$("form").submit(function() {
$("#changeFieldName").trigger("input");
$("#ticket-author-email").trigger("blur");
return !$(".text-error-input").length
})
});
</script>
</body>
</html>