我的程序经理是PHP中的QR码.我有我的QR码列表,并有(以及其他选项)删除QR码的选项.当我点击删除时,我想在javascript中显示确认消息.当我点击保存时,我不需要确认.
我的表格：
<form method="post" enctype="multipart/form-data">
(...)
<input type="submit" name="save_edit" value="SAVE" />
<input type="submit" name="delete" value="Delete QR-code" />
</form>
我的代码：
if(isset($_POST['delete']))
{
$id = $_SESSION['tmp_id'];
$query = MysqL_query("SELECT name_file FROM $tbl_query WHERE id='$id'");
if(MysqL_num_rows($query) > 0)
{
while($row = MysqL_fetch_array($query))
{
$result = MysqL_query("DELETE FROM $tbl_query WHERE id='$id'");
unlink("img_qr/".$row["name_file"]);
if($result)
{
$_SESSION['alert_type']=1;
$_SESSION['msg_alerr']= "QR-code delete!";
}
else
{
$_SESSION['alert_type']=-1;
$_SESSION['msg_alert']= "Error!";
}
}
}
}
我试过javascript但它不起作用：
<script type="text/javascript">
function confirm() {
var r=confirm('Are you sure you want to delete??');
if (r==true)
{
//delete file...
}
}
</script>
我想在删除之前看到确认窗口.
解决方法
把它放在你的表格中：
<form method="post" enctype="multipart/form-data" onsubmit="return confSubmit();">
你的javascript函数应该是
<script type="text/javascript">
function confSubmit() {
var r=confirm('Are you sure you want to delete??');
return r;
}
</script>
