Forum PHP Romania - Discutii despre PHP, MySQL, Javascript, AJAX, etc

[gogu19]

Am urmatorul script care trebuie sa-mi copieze in campul "text" valoarea tarifului in fctie de tara din <select>.Insa nu stiu ce este gresit:

echo '<script language="javascript">
function modifica(){
document.getElementById("text").value==document.getElementById("tarif").value;
}
</script>';


echo "<b>Modificare tarife TA</b><br><br>";
echo "<select multiple id=tarif name=tarif onchange=modifica()>";
$query=mysql_query("select * from tarife_ta");
while($row=mysql_fetch_array($query)){
echo "<option value=$row[tarif]>$row[tara]</option>";
}
echo "</select><br><br>";
echo "<b>Tarif:</b> <input type=text id=text>";


Ms

[Quber]

Cod:
document.getElementById("text").value = document.getElementById("tarif").value;


?

[gogu19]

Da,vreau sa copiez in campul text tariful corespunzator tarii din select

[gogu19]

Stiu ca nu este corect,insa nu reuse3sc sa gasesc varianta corecta...era ceva cu selectedIndex

[mihaitha]

In primul rand, tu faci o asignare nu o comparatie:
= - operator de asignare,
== - operator de comparatie.

In al doilea rand, incearca asa:
Cod:
function modifica(){
  var sel = document.getElementById("tarif");
  if (sel.selectedIndex != -1) // nu face asignarea decat daca e selectat un element, altfel crapa js-ul
    document.getElementById("text").value = sel.options[sel.selectedIndex].value;
}

[gogu19]

Mersi frumos.A mers

[PHPRomania Bot]