1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 <script type="text/javascript" src="../jquery-1.12.4.min.js"></script> 7 <script type="text/javascript"> 8 $(window).resize(function(){ 9 var $w = $(window).width(); 10 document.title = $w; 11 }) 12 </script> 13 </head> 14 <body> 15 16 </body> 17 </html>