php converted to js

if (_SERVER["REQUEST_METHOD"] == "POST") {
    var _SERVER, mail_to;
    mail_to = "test@yopmail.com";
    var email;
    email = filter_var(trim(_POST["email"]), FILTER_SANITIZE_EMAIL);
    if (empty(email)) {
        http_response_code(400);
        console.log("Please complete the form and try again.");
        throw new Exit();;
    }
    #
    Mail Content
    var content;
    content += "New token demand\n\
\n\
";
    content += "Email: " + email + "
    ";#
    email headers.
    var headers;
    headers = "From: New user";
    var success;
    success = mail(mail_to, subject, content, headers);
    if (success) {
        http_response_code(200);
        console.log("Thank You! Your message has been sent.");
    } else {
        http_response_code(500);
        console.log("Oops! Something went wrong, we couldn't send your message.");
    }
} else {
    http_response_code(403);
    console.log("There was a problem with your submission, please try again.");
}