<html>
<head>
<script>
function Point(x,y){
this.x=x;
this.y=y;
}
var p=new Point(1,2);
console.log(p.x);
console.log(p.y);
Point.prototype.r=function(){
return Math.sqrt(this.x*this.x+
this.y*this.y);
};
//window.print(p.r());
document.write(p.r());
</script>
</head>
<body>
<div>
I am a good girl
</div>
</body>
</html>
