check email tanpa reload page (PHP)

saya mau nanya bagaimana caranya agar kita mengirim data dengan post tanpa reload page saat akses ke proses.. berikut kodingannya :

cek.php

 <form method="POST" action="proses.php">
<input type="email" name="email">
<button type="submit" value="check email">
</form>

proses.php

 <?php
include 'config.php';

$email = $_POST['email'];

$query = mysqli_query($conn,"SELECT email FROM user WHERE email= '$email'");
if(mysqli_num_rows($query)>0)
{
echo "<script>alert('Email Address Already in Use.');window.history.back();</script>";
}
else
{
echo "<script>alert('Email OK.');window.history.back();</script>";
}
?>