我如何验证多选数组是否为空?(fallos [])这是我的代码:
<tr><td>Fallos reportados: </td><td><select name="fallos[]" size="6" multiple="multiple" >
<?php
$query = "SELECT falla_id,falla FROM falla order by falla";
$result = mysql_query($query);
if (!$result) die ("Database access failed: " . mysql_error());
while ($fila = mysql_fetch_array($result, MYSQL_ASSOC)){
echo "<option value=\"".$fila["falla_id"]."\">".$fila["falla"]."</option>";
}
?></td>
</tr>
这是我正在做但不起作用的验证
function validate(form) {
fail = validateIMEI(form.IMEI.value)
fail += validateTelefono(form.numero_telefono.value)
fail += validateICCID(form.ICCID.value)
fail += validateFallos(form.fallos.value)
if (fail === "") return true
else { alert(fail); return false }
}
这是验证 fallos[] 的特定选项:
function validateFallos(field) {
if(field=== "") return "No se ha ingresado tipo de fallos"
//if (field==="") return "No se han ingresado los tipos de fallos.\n"
return ""
}