javascript - Connect radiobutton with textbox -

i have dynamic created form textbox , radiobutton , want them work together.

if write in textbox want radiobutton unchecked , if radiobutton checked want textbox empty. i've tried lot of different things , of them wont work because of dynamic created form.

here javascript code doesn't work, maybe it'll realize want do.

function radiobox() {   if (document.getelementbyid("abdominalcircumferencetextbox").text == "") {       document.getelementbyid("abdominalcircumferenceradio").checked = true;   } }  

edit: ive solved doing this!

$(document).on("change", "#abdominalcircumferencetext", function () { $("#abdominalcircumferenceradio").prop('checked', false); });  $(document).on("change", "#abdominalcircumferenceradio", function () { $("#abdominalcircumferencetext").val(""); }); 

as you've mentioned jquery in tags, simple way of doing using jquery is:

<input type="text" id="mytextbox" /> <input type="checkbox" id="mycheckbox" checked /> 

with associated javascript:

$(document).ready(function() {     $("#mytextbox").keyup(function() {        $("#mycheckbox").prop("checked", $(this).val() == "");     });     $("#mycheckbox").change(function() {        $("#mytextbox").val("");     }); }); 

demonstration here: http://jsfiddle.net/rs5ec/1/