BOM Basics Section

Open, close the window open– Blue Ideal Run code feature close– Close when prompted questions Common Properties window.navigator.useragent window.location window size , Workspace size • viewable area size –document.documentelement.clientwidth–document.documentelement.clientheight scrolling distance –document.body.scrolltop–document.documentelement.scrolltop Common methods and Events L System dialog box • Warning Box: alert ("Content" ), no Return value • Select box: Confirm ("content of question"), return boolean input box: prompt (), return string or null windowobject Common event onload window JS load onscroll window scroll bar onresize When the window changes size • Example: Back to top button, sidebar ad – Flicker Problem

BOM Basics Section