How to connect javascript with JPA?

Question

JavaScript

Hello. Help, please, deal with the problem.
I am writing a web application. Described database entities and operations on them using JPA.
I am writing a frontend. Tell me how to connect a javascript script that reads information

<div id="main">
    <aside class="leftAside">
        <h2>For registration on this site</h2>
        <p>You should fill all fields bellow
    </aside>
    <section>
        <article>
            <h1>Registration</h1>
            <div class="text-article">
                <form method="POST" action="registration">
                    <p>
                        <label for="login">Login </label>
                        <input type="text" name="login" id="login"/>
                    </p>
                        <p>
                            <label for="email">E-Mail</label>
                            <input type="email" name="email" id="email"/>
                        </p>
                        <p>
                            <label for="password">Password</label>
                            <input type="password" name="password" id="password"/>

                            <label for="password2">Repeat password</label>
                            <input type="password" name="password2" id="password2"/>
                        </p>
                        <p>
                            <label for="name">Name</label>
                            <input type="text" name="name" id="name"/>
                        </p>
                        <p>
                            <label for="secondName">Second name</label>
                            <input type="text" name="login" id="secondName"/>
                        </p>
                        <p>
                            <label for="birthdayDate">Birthday date</label>
                            <input type="text" name="name" id="birthdayDate"/>
                        </p>
                        <p>
                            <label for="adress">Adress</label>
                            <input type="text" name="login" id="adress"/>
                        </p>
                        <p>
                            <button type="submit">SignUp</button>
                        </p>
                </form>
            </div>
        </article>
    </section>
</div>

with code that adds an object to the database.

public void addClient(String name, String secondName,
                          String birthdayData, String passport,
                          String adress, String eMail,
                          String password) {
        Client client = new Client(name, secondName, birthdayData,
                passport, adress, eMail, password);
        if (!isUserExist(eMail))
            MainDAO.addEntetyToBase(client);
        else System.out.println("User " + eMail + " already exists");
    }

What is the name of such a connection (to me for Google).

Answer 1

And you don't need javascript at all, if that. When you click on the button, you will receive the data entered in the form.