Javascript call within PHP

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Good afternoon, I’m having trouble running a Javascript code inside PHP. My intention is for the user to err the login and password appear a message on the Login screen warning the same that it erred, using Javascript making it remove a class called "class-invisible".

Follow the code below:

if ($resultado > 0) {
        logaUsuario($usuario->id, $usuario->nome, $usuario->grupo);
        header("Location: index.php");
    } else {
        echo "<script language='javascript' type='text/javascript'>
                function mostrarErro() {
                var alerta = $('.alerta-erro');

                alerta.removeClass('classe-invisivel');
                setTimeout(function() {
                alerta.addClass('classe-invisivel');
                }, 6000);
            }
                mostrarErro();
                window.location.replace('login.php');
              </script>";
    }

I can’t see where I’m going wrong. Someone could guide me, some hint?

Thank you!

php

1 answer

-1


Making the call that way is bad practice. Put the function in a JS file and escape to the login page in the onload event of the body tag the call of the function show().

<?php

// Suas regras de login
$erroLogin = false;

if ($resultado > 0) {
    //Se houver sucesso
    logaUsuario($usuario->id, $usuario->nome, $usuario->grupo);
    header("Location: index.php");

} else {
    //Se falhar
    $erroLogin = true;        
}


[....]
<html>
    <head>
    <script language='javascript' type='text/javascript'>
            function mostrarErro()
            {
                var alerta = $('.alerta-erro');
                alerta.removeClass('classe-invisivel');

                setTimeout(function() {
                    alerta.addClass('classe-invisivel');
                }, 6000);
            }
              </script>
    </head>
    <body <?php echo (isset($erroLogin) && $erroLogin === true) ? 'onload="javascript:mostrarErro();"' : null ;?>>

    [...]

    </body>
</html>

  • Thank you for the guidance that this is not good practice and for the help!

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