The Window Object

On the window object

HTML

<canvas id="canvas1" width="900" height="500"></canvas>

JavaScript

//The Window object
//The Window Object is the Global Object
//variables declared under it become its properties

var age = 29;

function alertAge() {
    alert(this.age);
}
/*
alert(window.age); //29
alert(age);
alertAge(); //29 this points to window under global scope
*/

//open a new window and name it newWin
var newWin = window.open("http://www.radikal.com.tr", "topFrame", 
            "height=1330, width=400, top=10, left=20, resizable=yes");
//close the new Window
newWin.close();

//refer back to the main window that opened newWin
alert(newWin.opener == window);