<html>
<body>
<form>
<input type="text" name="primo" id="primo" size=17>
<input type="text" name="secondo" id="secondo" size=17></br>
<input type="checkbox" name="tipo1" id="tipo1" value="terzo" />terzo</br>
<input type="checkbox" name="tipo1" id="tipo2" value="quarto" />quarto</br>
</form>
<p>Click the button to alert the contents of the text area.</p>
<button type="button" onclick="myFunction()">Try it</button>
<br>
<textarea id="cia">
</textarea>
<script>
function myFunction() {
var x = document.getElementById("primo").value;
document.getElementById("cia").innerHTML = "Prova: " + x ;
var y = document.getElementById("secondo").value;
document.getElementById("cia").innerHTML = "Prima: " + y ;
}
</script>
</body>
</html>