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

Question

0.00/5 (No votes)

See more:

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

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Ehsan Sajjad · Answer 1 · 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..

Member 14473246 · Answer 2 · 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