jQuery - char counter doesn't work with paste event

I wrote a jQuery character counter, it works when I type, but not when text is pasted. The function is executed upon paste, but count doesn't change. I am not sure if val() function is correct or really in synch with DOM. Any ideas?

 counter = function () {
     $j("strong#status-field-char-counter").text($j("#Panel1messagesmessage").val().length);
     alert('event');
 };


 $j("textarea").keyup(counter);
 $j("textarea").bind('paste', counter);
 $j("#Panel1messagesmessage").bind('copy', counter);
 $j("#Pan开发者_运维知识库el1messagesmessage").bind('delete', counter);

textarea contents can be changed in a number of ways, instead of trying to catch them all, simply install a routine that checks the content every 0.5 second, like

$(function() {
   window.charCount = 0;
   setInterval(function() {
      var c = $("textarea").val().length;
      if(c != window.charCount) {
        window.charCount = c;
        $("span").html(window.charCount); 
      }
    }, 500);
})

I usually use keyup in combination with change

The change event fires when the textbox loses focus, but only if the value was modified since it received focus.

Quick play about:

$("#textarea").change(function() {
              $("#status-field-char-counter").text($("#textarea").val().length);
         }).keyup(function() {
          $("#status-field-char-counter").text($("#textarea").val().length);
        });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<p id="status-field-char-counter">here</p>
    <input id="textarea" type="text" />