addclass - on click on element add specific class not working with jquery -


the scenarion : there 4 divs , 1 of them selected once clicked , selected 1 has specific class

this jquery code 

      $(".taskdiv").click(function(){        id = $(this).attr("id");        $(".taskdiv").removeclass("taskitemactive");        $(".taskdiv").addclass("taskitem");        $("#"+id).removeclass("taskitem");    $("#"+id).addclass("taskitemactive"); // last 2 lines , element clicked selected id , seems nothg         });

this css

   .taskitem{        background-color:#4e6d8d;        -moz-box-shadow: -5px -5px 5px cornflowerblue;        -webkit-box-shadow: -5px -5px 5px cornflowerblue;        box-shadow: -5px -5px 5px cornflowerblue;        cursor: pointer;        }       div .itemtitle{        padding-left: 15%;        padding-top: 5%;        }        .taskdiv{          height: 50px;width: 200px;color: white;margin: 5%;         }       .taskitemactive{         background-color:   #3a87ad;        -moz-box-shadow: -5px -5px 5px  #5dade2;        -webkit-box-shadow: -5px -5px 5px  #5dade2;        box-shadow: -5px -5px 5px  #5dade2;        };

and html 

  <td> <div class="taskitemactive taskdiv" id="taskitem1"><h3 class="itemtitle" >dates limites (0) <h3></div> </td>       <td> <div class="taskitem taskdiv" id="taskitem2"><h3 class="itemtitle" > congés </h3></td>       <td> <div class="taskitem taskdiv" id="taskitem3"><h3 class="itemtitle" > discipline </h3></td>        <td> <div class="taskitem taskdiv" id="taskitem4" ><h3 class="itemtitle" >autre..</h3></td>

@update

the code below works when click element , make element unchanged 

$(".taskdiv").hover(    function () {    color = $(this).css("background-color");     $(this).css("background-color","lightsteelblue");   },   function () {     $(this).css("background-color",color);   } );

try this:

$(".taskdiv").click(function () {     $(".taskdiv.taskitemactive").removeclass("taskitemactive");     $(".taskdiv").addclass("taskitem");     $(this).removeclass("taskitem").addclass("taskitemactive"); });

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