Hubercik

<!DOCTYPE html>
<html>
<head>

    <title>title</title>
    <meta charset="UTF-8">
</head>

<body>
<form>
<input type="text" id="x">
<input type="number" id="y">
<input type="checkbox" id="chb1"  value="Dziala"/>
<input type="button" value="sprCheck" onClick='s()'>
<input type="button" onClick="f()" value="Oblicz">
</form>
<p id='w'></p>
<h1 id="w1"></h1>
<script>

function f(){
var xx = document.getElementById("x");
x=xx.value;

x=parseInt(x);
var yy = document.getElementById("y");
y=yy.value;
y=parseInt(y);
document.getElementById("w1").innerHTML= "Wynik="+(x+y);
}

function s()
{
chb1 = document.getElementById('chb1');
if (chb1.checked){
  document.getElementById('w').innerHTML=chb1.value;}

 else
{  document.getElementById('w').innerHTML='Nie zaznaczono';}
}


</script>

  </body>

</html>