如何通过jquery发送变量

Question

I just created an autocomplete textbox via jquery now i am stuck with two problems.

1) I need to get the value of the selected item from the Autocomplete list.

So far i did these..

My jquery

$(document).ready(function(){
$("#tag").autocomplete("autocomplete.php", {
    selectFirst: true

});
});

I am getting the autocomplete list from the database its working fine, but the problem is that

2) When i type 'r' all the names with values gets populated and if i select say Robin from the list and try to display it with alert, i only gets 'r', (i only typed r,and selected 'robin' from list) why is this so?

here is the code i wrote for this

for the autocomplete textbox

  <input name="tags" type="text" id="tag"  value="" onchange= "newfn()" />

and in newfn()

<script>
        function newfn()
        {

             authname = document.getElementById("tag").value;

            document.autoquote.qid.value=authname;
            alert(authname);

        }
    </script>

and if i put an alert at first saying

alert("Hi");

then, i get first alert saying hi, and I get robin not r

So what is the correct way to get what value i selected from the autocomplete list?

Now my second Question is that the selected value from this autocomplete textbox, I need to pass it with another jquery to another php page so that I can get this value there and give it in a query as a criteria.

Answer 1

you can use the autocomplete's select property like this

$("#tag").autocomplete('autocomplete.php', {
    selectFirst: true,
    select: function (event, ui) {
        var label = ui.item.label;
        var value = ui.item.value;
        alert(label);
        alert(value)
     // you can write additional javascript code here to make use of these values

    }
 });

Please check the jQuery UI documentation for more examples and info.

Here is a JSFiddle.(Please note that an additional source attribute has been added in the fiddle to simulate the loading of data set as real cross domain AJAX calls are not allowed)