quinta-feira, 9 de dezembro de 2021

ajax javascript php

 <!--

    <?php

require_once("connection.php");

$sql="SELECT * FROM disciplina";

$qd=mysqli_query($con, $sql) or die($sql);

?>

<select id="disc">

    <?php while($fd=mysqli_fetch_assoc($qd)) {?>

<option value="<?php echo $fd['idDisciplina'];?>"><?php echo $fd['designacao'];?></option>

<?php }?>

</select>

-->

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta http-equiv="X-UA-Compatible" content="IE=edge">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>UFCD</title>

    <script>

        function disciplina() { 

if(navigator.onLine){

    var xmlhttp = new XMLHttpRequest();

            xmlhttp.onreadystatechange = function() {

              if (this.readyState == 4 && this.status == 200) {

                document.getElementById("disciplina").innerHTML = this.responseText;

              }

            };

            xmlhttp.open("GET", "disciplinaP.php", true);

            xmlhttp.send();

 

        } else {

        document.getElementById("internetStatus").innerHTML="Sem Internet";

    }  

}

            

        function enviar(a,b){

            if(!navigator.onLine){

            window.location = 'teste.php?idDisciplina='+a+'&ufcd='+b;

            /*xmlhttp.open("GET", "teste.php?idDisciplina="+a+"&ufcd="+b, true);*/

            xmlhttp.send();

        } else {

        document.getElementById("internetStatus").innerHTML="Sem Internet";

    }  

}

        </script>

</head>

<body onload="disciplina()">     

    <span id="disciplina"></span>

    <input id="ufcd" required>

    <button onclick="enviar(disc.value,ufcd.value)">Enviar</button>

</form>

<p id="internetStatus"></p>

</body>

</html>


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