In this particular situation enough will be just bind to the input event:

$('textarea').bind("input", function() {});

This will do what you want:

$("#editor").on('paste', function(e) {
  $(e.target).keyup();
});

$("#editor").on('keyup', function(e) {
  alert('up');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="editor">

Try using .focusOut(), this should handle all events ass soon as the user leaves the textbox, regardless of click, drops, tabs etc.

$('#my_input').on('focusout', function() {
   $(this).val($(this).val().replace(/  +?/g, ' '));
});

http://api.jquery.com/focusout/

Use .on() or .bind() to bind multiple events,

$(document).ready(function(){
   $('#username').on('keyup paste',username_check);
});


function username_check(){ 
    setTimeout( function() {
        var username = $('#username').val();
    },100);
    if(username == "" || username.length < 4){
      alert("error");
    }
}

Working Fiddle

You can use only "input" event if you don't need to provide support for the older browsers. It will be fired everytime a value changes in the input element. Here's a list of the supported browsers: https://developer.mozilla.org/en-US/docs/Web/Events/input

How about this: http://jsfiddle.net/5bNx4/

Please use .on if you are using jq1.7 et al.

Behaviour: When you type anything or paste anything on the 1st textarea the teaxtarea below captures the cahnge.

Rest I hope it helps the cause. :)

Helpful link =>

How do you handle oncut, oncopy, and onpaste in jQuery?

Catch paste input

EDIT:
Events list within .on() should be space-separated. Refer https://api.jquery.com/on/

code

$(document).ready(function() {
    var $editor    = $('#editor');
    var $clipboard = $('<textarea />').insertAfter($editor);
  
    if(!document.execCommand('StyleWithCSS', false, false)) {
        document.execCommand('UseCSS', false, true);
    }
        
    $editor.on('paste keydown', function() {
        var $self = $(this);            
        setTimeout(function(){ 
            var $content = $self.html();             
            $clipboard.val($content);
        },100);
     });
});

You can actually grab the value straight from the event. Its a bit obtuse how to get to it though.

Return false if you don't want it to go through.

$(this).on('paste', function(e) {

  var pasteData = e.originalEvent.clipboardData.getData('text')

});

Tested, working. Fiddle: http://jsfiddle.net/fnkr/MXnuk/

<script type="text/javascript">
    function checkInput() {
        if (document.getElementById("field_ygtw9u").value.length < 14) { //disable submit if "no" is selected
                $('input[type=submit]').attr("disabled", "disabled");
            } else { //enable the submit button
                $('input[type=submit]').removeAttr('disabled');
            }
    }

    jQuery(document).ready(function ($) {
        $('input[type=submit]').attr("disabled", "disabled");
        $('input[name="item_meta[1234]"]').bind("input", function () { //change # to the ID of your field
            checkInput();    
        });

        $('input[name="item_meta[1234]"]').bind("propertychange", function () { //change # to the ID of your field
            checkInput();
        });
    });
</script>

<form>
    <div id="frm_field_1234_container" class="frm_form_field form-field  frm_required_field frm_top_container">
        <label class="frm_primary_label">Minimun 15 char: <span class="frm_required"></span>

        </label>
        <input type="text" id="field_ygtw9u" name="item_meta[1234]" value="" maxlength="15"
        class="required" />
        <p class="submit">
            <input type="submit" value="Submit" />
        </p>
</form>