闭包 - 页面渐变
1 var fade = function(node) { 2 var level = 1; 3 var step = function() { 4 var hex = level.toString(); 5 node.style.backgroundColor = '#FFFF' + hex + hex; 6 if (level < 15) { 7 level += 1; 8 setTimeout(step, 100); 9 } 10 }; 11 setTimeout(step, 100); 12 }; 13 fade(document.body);
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> 5 <title></title> 6 </head> 7 <body> 8 <script type="text/javascript" src="index.js"></script> 9 </body> 10 </html>