Window Size Responsive CSS Layout Stylesheet Change Tutorial

Published :
Author :
Adam Khoury
Learn to program layout responses to the browser window size changes using JavaScript to affect the CSS style sheet link element in the document. The script also handles layout adjustment when the document is initially loading. <!DOCTYPE html> <html> <head> <link id="pagestyle" rel="stylesheet" type="text/css" href="large.css"> <script> function layoutHandler(){ var styleLink = document.getElementById("pagestyle"); if(window.innerWidth < 900){ styleLink.setAttribute("href", "mobile.css"); } else if(window.innerWidth < 1200){ styleLink.setAttribute("href", "medium.css"); } else { styleLink.setAttribute("href", "large.css"); } } window.onresize = layoutHandler; layoutHandler(); </script> </head> <body> <div id="my_header"></div> <div id="my_menu"> <a href="#">Home</a> <a href="#">Services</a> <a href="#">Staff</a> <a href="#">Contact</a> </div> <div id="my_content"> Lorem ipsum goes here as dummy text, lots of it. </div> </body> </html>