performe the search on writting in textbox

Question

I want to search the web grid data, as soon as I enter the text in textbox actually i do not want searching by button I want searching on writing of text in textbox

 

<script type="text/javascript">

$(function () {

$("#txt_search").change(function () {

var value = $(this).val(); //get textbox value

//call the getWebgridData function or directly use JQuery Ajax to update the data.

});

});

</script>

<input id="txt_search" class="form-control" type="text" placeholder="Search"/>