can anyone suggest a dependent field widget

i need some widget for populating some field based on one field (ajax request on server side needed), like kartik depdrop but for text field.

can anyone suggest me to prevent me invent wheel again :)

thanks in advance.

Something as:

$('#textField').on('change', function(ev) {


        'url to be called',

        { 'textValue' : $(this).val() },

        function(data) { 

              // here data is json





yes, but i was looking for some widget or bundle, thanks anyway