Could someone tell me how to make disappear a message after a few seconds?

$msg = '<h4 class="col-12 text-center mb-3 text-success">Sikeres rögzítés!</h4>';

After receiving the POST, it stays there and I need to reload to make it disappear.

Thanks for the help.

    include 'settings.php';

    $msg = '';

    if(isset($_POST['rogzit'])) {

        if(isset($_POST['vonalkod']) && isset($_POST['garnitura'])) {

            $vonalkod = $_POST['vonalkod'];
            $garnitura = $_POST['garnitura'];

            if(strlen($vonalkod) > 10) {
                $msg = '<h4 >Nem megfelelő a vonalkód beolvasása!</h4>';
            } else if(strlen($vonalkod) < 10) {
                $msg = '<h4 >Nem megfelelő a vonalkód beolvasása!</h4>';

            } else if(strlen($garnitura) < 0) {
                $msg = '<h4 >Nincs garnitúra beírva!</h4>';
            } else {                    
                $sql_beszuras = "INSERT INTO gsaa(vonalkod, garnitura) VALUES ('$vonalkod', '$garnitura')";

                if(mysqli_query($conn, $sql_beszuras)) {

                $msg = '<h4 >Sikeres rögzítés!</h4>';
                } else {
                $msg = '<h4 >Sikertelen rögzítés!</h4>';
                }
            }
            } else {
                $msg = '<h4 >Hiányzó adat a POST kérésből!</h4>';
            }
        
    }
?>

CodePudding user response：

This has to be done client-side (i.e. in javascript) since PHP has finished after echoing the response (and, PHP only works server-side).

Here's a suggested algorithm (UNTESTED pseudo-code):

On the PHP side, add the class autovanish (or whatever you want) to the element you want to automatically vanish after so many seconds.

$msg = '<h4 class="autovanish col-12 text-center mb-3 text-success">Sikeres rögzítés!</h4>';

Then, have a javascript function running all the time:

function autovanish(){
   const avDivs = document.getElementsByClassName('autovanish');
   if (avDivs.length){
      setTimeout(() => {
          avDivs[0].remove();
      }, 3000); //removes the element after 3000ms
   }
   setTimeout(() => {autovanish();}, 500); //re-run every 500ms
}

In case you are not a js guy, you need the [0] after avDivs because getElementsByClassName returns a collection, not a string.

If you need more assistance than this pseudo-code, ask in the comments.

CodePudding user response：

    // Adatbázis csatlakozás
    require_once 'php/database.php';
    // Bejelentkezés vizsgálat
    require_once 'php/logincheck.php';

    // HTML szerkezet eleje
    $title = 'Főoldal';
    require_once 'components/htmltop.php';
    // Navigációs sáv
    require_once 'components/navbar.php';

    $msg = '';

    if(isset($_POST['rogzit_in'])) {

        if(isset($_POST['barcode'])) {

            $barcode = $_POST['barcode'];

            if(strlen($barcode) < 0) {
                $msg = '<h4 class="col-12 text-center mb-3 text-danger">Nem megfelelő a vonalkód beolvasása!</h4>';
            } else {                    
                $sql_beszuras = "INSERT INTO log_in(barcode) VALUES ('$barcode')";

                if(mysqli_query($dbCon, $sql_beszuras)) {
                
                    $msg = '<h4 class="autovanish col-12 text-center mb-3 text-success">Sikeres rögzítés!</h4>';

                } else {
                    $msg = '<h4 class="autovanish col-12 text-center mb-3 text-danger">Sikertelen rögzítés!</h4>';
                }
            }
            } else {
                $msg = '<h4 class="autovanish col-12 text-center mb-3 text-danger">Hiányzó adat a POST kérésből!</h4>';
            }
    }
    if(isset($_POST['rogzit_out'])) {

        if(isset($_POST['barcode'])) {

            $barcode = $_POST['barcode'];

            if(strlen($barcode) < 0) {
                $msg = '<h4 class="col-12 text-center mb-3 text-danger">Nem megfelelő a vonalkód beolvasása!</h4>';
            } else {                    
                $sql_beszuras = "INSERT INTO log_out(barcode) VALUES ('$barcode')";

                if(mysqli_query($dbCon, $sql_beszuras)) {

                $msg = '<h4 class="autovanish col-12 text-center mb-3 text-success">Sikeres rögzítés!</h4>';
                } else {
                $msg = '<h4 class="autovanish col-12 text-center mb-3 text-danger">Sikertelen rögzítés!</h4>';
                }
            }
            } else {
                $msg = '<h4 class="autovanish col-12 text-center mb-3 text-danger">Hiányzó adat a POST kérésből!</h4>';
            }
    } 
?>
<!DOCTYPE html>
<html lang="hu">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
    <link rel="preconnect" href="https://fonts.gstatic.com">
    <link href="https://fonts.googleapis.com/css2?family=Ubuntu:wght@400;500;700&display=swap" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css">
    <link rel="stylesheet" href="css/style.css" media="screen">
    <title><?=$title?> - KARSOL</title>
</head>
<body>
<div class="col-6 mx-auto">
            <form action="" method="post" class="col-12 mx-auto mb-3 form-group bg-white shadow p-3 text-center">
                <h4 class="col-12 text-center my-3">Gyártás rögzítés</h4>

                <label>Vonalkód:</label>
                <input type="text" name="barcode" class="form-control mb-3 col-6 mx-auto" required autocomplete="off">

                <button type="submit_in" name="rogzit_in" class="btn btn-dark">Belépés</button>
                <button type="submit_out" name="rogzit_out" class="btn btn-dark">Kilépés</button>
                <?=$msg?>
            </form>
        </div>

<script> 
    document.addEventListener('DOMContentLoaded',() => {
       autovanish();
    }

    function autovanish(){
    const avDivs = document.getElementsByClassName('autovanish');
    if (avDivs.length){
       setTimeout(function(){
           avDivs[0].remove();
       }, 3000); //removes the element after 3000ms
    }
    setTimeout(() => {autovanish();}, 500); //re-run every 500ms   
 }
</script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg OMhuP IlRH9sENBO0LRn5q 8nbTov4 1p" crossorigin="anonymous"></script>
</body>
</html>```