Ajax email Availability check with php not working

Question

I want to check email availability but it\'s not working. and also I am new to javascript and ajax please help me.

his is my code email input with span to show outpu

Answer 1

you can use type:"POST" instead of method:"POST" I think work thanks

Answer 2

You should check link I refered in comment its your complete answer.

here is a Simple example with your code.

include("DbConn.php");
    // Set alerts as array 
$error     = "";

    // I should just trrim and let you check if email is empty .lol 
if (empty($_POST["email_val"])) {
    $error .= "<p class='error'>Fill email value.</p>";

    //Check if this is a real email 
} elseif(!filter_var($_POST["email_val"],FILTER_VALIDATE_EMAIL)){
    $error .= "<p class='error'>Wrong email type.</p>";
}else{
    $email = mysqli_real_escape_string($conn, $_POST["email_val"]);

    //You should use prepare statement $email, Shame on you .lol    
    $query = "SELECT * FROM customer WHERE email = '{$email}'");
    $result = mysqli_query($conn, $query);
    echo mysqli_num_rows($result);
    $error .= "ok";
}
$data = array(
 'error'  => $error
);

This Jquery :

 $(document).ready(function(){
    $('#myform').submit(function(event){
    event.preventDefault();
    var formValues = $(this).serialize();
        $.ajax({
        url:"includes\emailAvailability.php",
        method:"POST",
        data:formValues,
        dataType:"JSON",
            success:function(data){
                if(data.error === 'ok'){
                    $('#result').html(data.error);
                } else {
                    $('#result').html(data.error);
                    $('#myform')[0].reset();
                }
            }
        });
    });
});

And Html :

<form id="myform">
  <input class="input--style-4" id="email" type="email" name="email_val">
  <span id="result"></span>
  <button type="button" class="btn btn-primary">Send</button>
</form>