php - jQuery voting system -

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so making voting system, thumbs & thumbs down voting system. using cakephp , jquery mysql want make sure front end correct , best way it.

i want user able change vote, so utilizing jquery best , efficient way? i'm novice jquery when comes class manipulation.

the id field going unique id of photo users voting on. of course test , not going final product in production. there multiple photos on page , user votes or down each of them.

here code.

<?php echo $javascript->link('jquery/jquery-1.4.2.min',false); ?> <script type="text/javascript">     $(document).ready(function() {         $('.vote').click(function () {             if ($(this).hasclass("current")) {                 alert("you have voted option!");                  return;             }             var parentid = $(this).parent("div").attr("id");             if ($(this).hasclass("up")) {                 //do backend query , checking here                 alert("voted up!");                 $(this).toggleclass("current");                 if ($("#" + parentid + "-down").hasclass("current")) {                     $("#" + parentid + "-down").toggleclass("current");                 }             }             else if($(this).hasclass("down")) {                 //do backend query , checking here                 alert("voted down!");                 $(this).toggleclass("current");                 if ($("#" + parentid + "-up").hasclass("current")) {                     $("#" + parentid + "-up").toggleclass("current");                 }             }            });     }); </script> <div id="1234">     <a id="1234-up" class="vote up" >+</a> | <a id="1234-down" class="vote down" >-</a> </div>

you way: 

<script type="text/javascript">     $(document).ready(function() {         $('.vote').click(function () {             if ($(this).hasclass("current")) {                 alert("you have voted option!");             } else {                 var parentid = $(this).parent("div").attr("id");                 var error = false;                  if ($(this).hasclass("up")) {                     //do backend query , checking here (set: error)                     alert("voted up!");                 }                 else if($(this).hasclass("down")) {                     //do backend query , checking here (set: error)                     alert("voted down!");                 }                 //removes votes                  $(this).parent("div").children().removeclass("current");                  if(!error) {                     $(this).addclass("current");                 } else {                     alert("there error");                 }             }             return false;         });     }); </script> <div id="1234">     <a class="vote up" href="#">+</a> | <a class="vote down" href="#">-</a> </div>

it removes need html id's , dont need doubled code add current class. i'm not sure quicker, think way allow better code maintenance.


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