Javascript top Object

window object is the top one.it will be created after user open a browser,or we can create sub windows from current window.we can also refer to its properties(property and method),

like we can call following method:

var subwindow = window.open("define.html","def","height=200,width=300")

subwindow.close()

window.alert("the is a javascript alert dialog")

if(window.confirm("Are you sure you want to start over?")

{

location.href="index.html"

}

the word window could be ommited.

var answer = prompt("What is your name?","");

if (answer)

{

alert("Hello, " + answer + "!");

}

window.addEventListener(’load’, functionName, false);

window.attachEvent(’onload’, functionName);

navigator object represents the URL of the current window