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Editorial Team
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Asked: 2026-06-10T10:35:38+00:00

<!DOCTYPE HTML> <html lang=en> <head> <meta charset=utf-8> <title>Amateur</title> <link rel=stylesheet href=css/reset.css type=text/css> <script src=http://code.jquery.com/jquery-1.8.0.js>

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<!DOCTYPE HTML>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Amateur</title>
    <link rel="stylesheet" href="css/reset.css" type="text/css">
    <script src="http://code.jquery.com/jquery-1.8.0.js">
        function check_email()
        {
            var email=$("#txtEmail").val();
            $.ajax(
            {
                type:"POST";
                url:"index.php";
                data:"email="+email,
                success:function(msg)
                {
                    $("#chkEmail").html(msg);
                }
            });

            return false;
        }
    </script>
</head>

<body>
<form method="post">
    <label for="txtEmail">E-mail:</label>
        <input id="txtEmail" name="email" type="email" onblur="return check_email()">
    <label id="chkEmail" for="txtEmail"></label>
    <?php

    if(isset($_POST['email']))
    {
        $user='root';

        $pdo=new PDO('mysql:host=localhost;dbname=class;charset=utf8',$user);

        $email=$_POST['email'];

        $stmt=$pdo->prepare('SELECT email from tbl_users WHERE email=:email LIMIT 1');
        $stmt->execute(array(':email'=>$email));

        if($stmt->rowCount()>0)
        {
            echo 'E-mail already use.';
        }
        else
        {
            echo 'E-mail not use.';
        }

    }

    ?>
</form>
</body>
</html>

I am still a starter in PHP and JQuery I want to know how to fix this type of error? I check it from firebug. The flow is that after the user done typing the email it will check automatically from the database if it exist or not. And the expected output does not show in my page.

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1 Answer

  1. Editorial Team

    You’re missing quotes on selectors, seperating parameters in the ajax function with semicolons and not comma’s etc.

        function check_email() {
        var email=$("#txtEmail").val();
            $.ajax({
                type:"POST",
                url:"index.php",
                data: {email: email},
                success:function(msg) {
                    $("#chkEmail").html(msg);
                }
            });
            return false;
       }
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