Код:
<html>
<head>
<meta charset=utf-8>
</head>
<body>
<input type="text" id="a"><br>
<input type="text" id="b"><br>
<input type="text" readonly id="c"><br>
<input type="button" value="Решить" onClick="solve();">
<script language="javascript" type="text/javascript">
//a=3;
//b=4;
//c=Math.sqrt(a*a+b*b);
//alert(c);
//document.title=c;
//setInterval("document.title=Math.random()",3000);
function solve() {
kat1=document.getElementById("a").value;
kat2=document.getElementById("b").value;
//gip=Math.sqrt(kat1*kat1+kat2*kat2);
gip=kat1*1+kat2*1;
document.getElementById("c").value=gip;
}
</script>
</body>
</html>
