<html>
<head>
<meta charset="utf-8">
</head>
<body>
<input id="one">
<input id="two">
<input id="three">
<input id="four">
<input id="five">
<button id="button">copy</button>
<script>
button.onclick=function(){
two.value=three.value=four.value=five.value=one.value
}
</script>
</body>
</html>