<!DOCTYPE html>
<html>
<head>
<title>Test</title>
</head>
<body>
<input type="text" id="demo" name="">
<p id="view"></p>
<script type="text/javascript">
var id = document.getElementById('demo');
var view = document.getElementById('view');
id.addEventListener('input', function(evt){
view.innerHTML = this.value;
});
</script>
</body>
</html>