ajax在php中调用并验证电子邮件

I'm trying to "transform" a form action into an ajax call. My form:

 <!-- <form method="POST" onSubmit="return doSubmitLogic()" action="action.scripts.php" >
<input type="hidden" name="actiune" value="login" />
<div>
    <label> Email </label>
    <input type="email" name = "email" id="email" /><span id="emailErr"></span >
</div>
<div>
    <label> Password </label>
    <input type="password" name = "password" id="password" /> <span  id="passErr"></span >
</div>

<div>
    <input id ="submitBtn" type="submit" name="button" value="Send"/>
</div>

And what I tried to do with my ajax:

$(document).ready(function(){
$("#submitBtn").click(function(e){

    e.preventDefault();  

    $.ajax({
        type: "POST",
        url: "functions.php",
        data: {
               Email: $("#email").val(),
               Password: $("#password").val(),
              },

        success: function(result){   
            alert(result);
        },
        error: function (error){
            alert("Error");
        }

   });
 });
 });

Also my piece of code "functions.php" is composed by many checking if the action has a specific value and if so to do something.So:

  if ($_POST['actiune']==="login") {
    $email = $_POST['email'];
    $password = $_POST['password'];
    $encript_pass = md5($password);

    $query = "select * from user where email='$email' and password='$encript_pass'"; 
    $result = mysql_query($query) or die ("Error in query: $query " . mysql_error()); 
    $row = mysql_fetch_array($result); 



    if (!filter_var($email, FILTER_VALIDATE_EMAIL) === false) {
        echo("$email is a valid email address");
    } else {
        echo("$email is not a valid email address");
    }   
 }

when I run it it give me an alert saying error. Any syggestions?

You need to pass actiune with your datas too.

 data: {
      email: $("#email").val(),
      password: $("#password").val(),
      actiune: 'login'
 },

I also removed the uppercases from the field you pass since you require password and email in your php not Password and Email

Just replace your code with this, notice the "actiune" under the Email & Password

    $(document).ready(function(){
$("#submitBtn").click(function(e){

    e.preventDefault();  

    $.ajax({
        type: "POST",
        url: "functions.php",
        data: {
               Email: $("#email").val(),
               Password: $("#password").val(),
               actiune: $('input[name="actiune"]').val()
              },

        success: function(result){   
            alert(result);
        },
        error: function (error){
            alert("Error");
        }

   });
 });
 });