Jquery checking checkbox on click doesn't check it -

okay i'm using supersimple code check checkboxes. have invisible ahref on elements , checkbox next them. here's html:

<a href="#" class="transparent-checkbox-thingy" id="<?php echo $id;?>" onclick="check(<?php echo $id;?>)"></a> <input type="checkbox" value="<?php echo $id;?>" name="users[]" class="newconvo-check" id="<?php echo $id;?>"> 

so i've tried using method, check() function , input tags have same id, using following jq:

function check(id) {     var newid = '#'+id;     $(newid).prop('checked', true); }; 

or 1

function check(id) {      $('#' + id).prop('checked', true); }; 

or one

function check(id) {     $(id).prop('checked', true); }; 

none of them work. return valid info on alert(id) or alert(newid) don't check damned checkbox. tried one:

$(document).ready(function() {         $("a.transparent-checkbox-thingy").click(function(event) {             event.preventdefault();             var thisid = ('#' + event.target.id);             $(thisid).prop('checked', true);         });     }); 

didn't work. tried this

$(document).ready(function() {         $("a.transparent-checkbox-thingy").click(function(event) {             event.preventdefault();             $('#1').prop('checked', true);         });     }); 

didn't work. yes, there <input type="checkbox"> id="1" always. , that's 1 i'm testing. , yes, have

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script> 

you have used same id in <a> , <input type="checkbox", id unique cant able use multiple place

 <a href="#" class="transparent-checkbox-thingy" id="<?php echo $id;?>" onclick="check(<?php echo $id;?>)"></a>  <input type="checkbox" value="<?php echo $id;?>" name="users[]" class="newconvo-check" id="<?php echo $id;?>"> 

use this,

<a href="#" class="transparent-checkbox-thingy" id="<?php echo $id;?>" onclick="check(<?php echo $id;?>)">check</a> <input type="checkbox" value="<?php echo $id;?>" name="users[]" class="newconvo-check" id="c_<?php echo $id;?>">  <script type="text/javascript">  function check(id) {     var newid = '#c_'+id;     $(newid).prop('checked', true); };  </script>