オブジェクト ＪＳ - プログラム倉庫

function sample(){
 
var x2,y2;
 
var p = new point(); 
 
p.move(200,200);
x2=p.x;
y2=p.y;
 
alert(x2);  
 
}
 
function point(){
  this.x = 50;
  this.y = 50;
  return this;
}
 
point.prototype.move = function( x1,y1 ){
  this.x = this.x+x1;
  this.y = this.y+y1;
}