我需要在表单上启用或禁用Bootstrap提交按钮,根据复选框是否被选中。
echo "<div class='panel panel-danger'><div class='panel-heading'>OBSERVACIONES</div><div class='panel-body'>";
echo "<div class='input-group'>";
echo "<label class='checkbox-inline'><input type='checkbox' name='visto' id='visto' value=''> Visto bueno del Responsable</label>";
echo "</div>";
echo "</div>";
...
echo "<input type='submit' class='btn btn-primary' value='SAVE' name='grabaperaus' formaction='update.php'>";