jquery closure ajax call, $(this) is null -

i'm new jquery, might seems simple can't see trick :p
i'm using jquery 1.2.6 ( , can't upgrade :/ ) that's why i'm using livequery plugin.

the context update of cart in eshop.
problem don't value want "myid" in update_it.php.
- example 1 (see code below) it's working ! call made , got value in update_it.php "myid". hardcoded, want generic (see example 2).
- example 2 it's not working :( alert working, call working don't value "myid"

here javascript :

$(document).ready( function () {     function update_it() {         $.ajax({              type: "post",             url: "./update_it.php",             datatype: "json",             data: "myid="+$(this).val(),             success: function(msg){                 $("div#cart-full").html(msg.fullcart);                 $("div#cart").html(msg.mincart);             },             error : function(xhr, desc, e) {                 alert("ko - " + xhr.status);             }        });     }      // example 1     $("#mycheckbox_1").livequery("click", update_it);      // example 2     $("input:checkbox[id^=mycheckbox_]").each(function(){          $(this).livequery("click", update_it);     });  }); 

thanks !

the example second selection on jquery page involves second set of quotation marks: jquery( "[attribute^='value']" )

try $("input:checkbox[id^='mycheckbox_']").each(function(){

edit:

in case, try "on" keyword in following example instead of livejquery. http://jsfiddle.net/4laqx/2/

$(function () {     $(document).ready(function(){         $("[id^='hoverme_']").each(function () {           $(this).on("click", listen);           });     });      function listen(){         alert($(this).html());     } }); 

and in case of jquery 1.2.6, click() keyword

http://jsfiddle.net/4laqx/5/

$(this).click(dosomethingfunc);

---

edit

$(document).ready( function () {       // example 2     $("input:checkbox[id^=mycheckbox_]").click(update_it);   }); function update_it() {             $.ajax({                  type: "post",                 url: "./update_it.php",                 datatype: "json",                 data: "myid="+$(this).val(),                 success: function(msg){                     $("div#cart-full").html(msg.fullcart);                     $("div#cart").html(msg.mincart);                     $("input:checkbox[id^=mycheckbox_]").unbind("click");                     $("input:checkbox[id^=mycheckbox_]").bind("click");                 },                 error : function(xhr, desc, e) {                     alert("ko - " + xhr.status);                 }            });         }