Javascript确认链接

Question

 $insert = mysqli_query($connect, "INSERT INTO orders  
(OrderID,Ordered,date_adds) VALUES ('$no','$checkout',NOW())");


if ($insert_it){

echo '
 <script>alert ("awtsu")</script>
    <script>myFunction</script>
';


}



 <script>
function myFunction() {
var txt;
var r = confirm("Cliicq a button!");
if (r == true) {

  txt = window.open('confirm.php<?php echo "?order=$no"; ?> ','_self');
} else {
    txt = "You pressed Cancel!";
}

}
</script>

如何使用确认而不使用按钮onclick？设置查询时，对话框是或否不起作用。什么是正确的语法？当$ insert设置时，我希望有一个带有两个选项的对话框，当点击时它会直接转到另一个链接