hello i need little help to read multiple values by multiple buttons like 1,2,3 and output in input like this 123 not only 1 number, concurnete number by every click
<input type="button" onclick="changeText(1)" value="1" >
<input type="button"  onClick="changeText(2)" value="2">
<input type="button"  onClick="changeText(3)" value="3">
<br>
<input type="text" id="count" value=""/>
function changeText(value) {
    document.getElementById('count').value = value ;
}
floowed by next number
link demo http://jsfiddle.net/J7m7m/541/
 
     
    