Clearing a typeahead if no value is selected from the dropdown jquery ajax

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I use typeahead.js as autocomplete textbox.

when I input and select a value from the suggestions, textbox and hiddenfield sets the value correctly. But when I input a value and loose focus of textbox without selecting textbox value and hiddenfield value are missmatch.

How do I clear the value of the textbox and hiddenfield when the input value is not selected from suggestions.

What I have tried:

$(function () {
    $('#txtCustomer').typeahead({
        hint: true,
        highlight: true,
        minLength: 1,
        source: function (request, response) {
            $.ajax({
                url: '/Customer.aspx/GetCustomers',
            data: "{ 'prefix': '" + request + "'}",
            dataType: "json",
            type: "POST",
            contentType: "application/json; charset=utf-8",
            success: function (data) {
                items = []; map = {};
                var obj = JSON.parse(data.d);
                $.each(obj.Data, function (i, value) {
                    map[name] = { id: value.CustomerID, name: value.FullName };
                    items.push(map[name]);
                });
                response(items);
            },
            error: OnError,
            failure: OnError,
        });
    },
    updater: function (item) {
        $('#hfCustomerId').val(item.id);
        return item;
    }
});
});

Posted 2-Feb-18 1:37am

nikhil8085

Updated 27-Jul-19 8:33am

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Member 14473246 · Answer 1 · 2019-07-27T08:34:00

Solution 2

use "typeahead:close" instead of "typeahead:closed"
see typeahead.js/jquery_typeahead.md at master · twitter/typeahead.js · GitHub[^]

Posted 27-Jul-19 8:34am

Member 14473246

Ehsan Sajjad · Answer 2 · 2018-02-02T02:06:00

Solution 1

How about adding the closed event at end like following:

JavaScript

.on("typeahead:closed",function() {
alert("Dropdown Closed!");
 $('#hfCustomerId').val('');
 $('#txtCustomer').val('');
});

Refer to the following fiddle:

Demo Fiddle

Posted 2-Feb-18 2:06am

Ehsan Sajjad

Updated 2-Feb-18 5:55am

v2

Comments

Laxmidhar tatwa technologies 2-Feb-18 11:53am

Yes in the above function the textbox should be cleated

nikhil8085 3-Feb-18 2:00am

not working for me :(

Ehsan Sajjad 3-Feb-18 3:14am

Check the browser console for any js errors

nikhil8085 3-Feb-18 4:54am

not getting any errors.

nikhil8085 3-Feb-18 4:55am

My updated code But no luck for me

$(function () {
$('#txtCustomer').typeahead({
hint: true,
highlight: true,
minLength: 1,
source: function (request, response) {
$.ajax({
url: '/Customer.aspx/GetCustomers',
data: "{ 'prefix': '" + request + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
items = []; map = {};
var obj = JSON.parse(data.d);
$.each(obj.Data, function (i, value) {
map[name] = { id: value.CustomerID, name: value.FullName };
items.push(map[name]);
});
response(items);
},
error: OnError,
failure: OnError,
});
},
updater: function (item) {
$('#hfCustomerId').val(item.id);
return item;
}
});
}).on("typeahead:closed",function() {
alert("Dropdown Closed!");
$('#hfCustomerId').val('');
$('#txtCustomer').val('');
});

Ehsan Sajjad 3-Feb-18 5:31am

do you see that alert ?

nikhil8085 3-Feb-18 6:58am

nope! typeahead:closed is not triggering dont know why..