jquery - Minification of Javascript and increasing performance -

here code html:

<div class="board">   <table id="mastermind_table_one">     <tr id="one">       <td></td>       <td></td>       <td></td>       <td></td>    </tr>  </table>    <table id="mastermind_table_two">     <tr id="two">       <td></td>       <td></td>       <td></td>       <td></td>     </tr>   </table>    <table id="mastermind_table_three">     <tr id="three">       <td></td>       <td></td>       <td></td>       <td></td>    </tr>   </table> </div> 

here code javascript:

$('.next_round').click(function() {   var count = 3;   var counter = setinterval(timer, 1000);    function timer() {     count = count - 1;     if (count === 0) {       $('#mastermind_table_two').each(function() {         $(this).find('td').each(function() {           $(this).css("background-color", setrandomcolor);         })       })     clearinterval(counter);   } }) 

i building game in when "next_round" button clicked, empty tds filled random background color (there's more code, such setrandomcolor function, it's not relevant question).

i have ten mastermind_tables total, , problem lies. repeating code each table. know how can have listed once , move next td when click "next_round"?

i.e. js code above specific mastermind_table_two. how can have dynamic , move next td once previous 1 executed?

updated

my mistake, must have readed question in worng way

try this, bit of hacky might fit needs

 $('.next_round').click(function () {         $('[id^=mastermind_table_]').each(function () {             $(this).addclass("nottreated");//a fake class control         });         var counter = setinterval(timer, 1000);          function timer() {             var currenttable;             if ((currenttable = $(".nottreated").first()) == null) {                 clearinterval(counter);                 return;             }              $(currenttable).find('td').each(function () {                 $(this).css("background-color", setrandomcolor);             });             //after treat table, removes fake class             $(currenttable).removeclass("nottreated");         }     });