Invoking keyless/keydown event of a textbox

[thecyberzone]

I have an easyui-textbox and an easyui-linkbutton. By default easyui-linkbutton remains disabled. I want whenever any alpha-numeric key is pressed in textbox, linkbutton will be enabled, and making textbox empty will again make the linkbutton disabled.
I used onChange event, but when focus goes out of textbox, only then button becomes enabled. Could not bind user defined keyless/keydown event successfully.
Please help me.

[thecyberzone]

I have tested following codes :

Code:

       $('#jobpos').textbox({
 onChange: function(){
   $('#jobpos').textbox('setValue',$(this).val());
   $('#btnAdd').linkbutton('enable');
   $('#btnDel').linkbutton('enable');
 }
});

and

      

Code:

$('#jobpos').textbox('textbox').bind('keypress', function(e){
$('#jobpos').textbox('setValue',$(this).val());
   $('#btnAdd').linkbutton('enable');
   $('#btnDel').linkbutton('enable');
});

In first case when focus goes out of #jobpos textbox, only then Add and Del button becomes active.
But in 2nd case nothing happens, may be any mistake in binding keypress with the textbox, it is not functioning at all.

here is the HTML I have used

Code:

<div class="fitem" style="float:left; text-align: left; width: 680px; margin-left:20px; margin-top:0px;  margin-bottom:10px;">
<label2>Job Position</label2>
<input id="jobpos" name="jobpos" style="width:400px;"  class="easyui-textbox" type="text" />
<a id="btnAdd" href="#" class="easyui-linkbutton" data-options="iconCls:'fa fa-plus-circle'" style="margin-left: 10px;" onclick="addJobpos()">Add</a>
<a id="btnDel" href="#" class="easyui-linkbutton" data-options="iconCls:'fa fa-minus-circle'" style="margin-left: 10px;" onclick="delJobpos()">Del</a>
</div>

[stworthy]

Try this code to get the real-time inputing text.

Code:

$('#jobpos').textbox({
inputEvents: $.extend({}, $.fn.textbox.defaults.inputEvents, {
keyup: function(e){
var value = $(e.data.target).textbox('getText');
if (value){
$('#btnAdd,#btnDel').linkbutton('enable');
} else {
$('#btnAdd,#btnDel').linkbutton('disable');
}
}
})
})

[thecyberzone]

Many thanks