异步加载javascripts
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta name="generator" content="HTML Tidy for Mac OS X (vers 1 September 2005), see www.w3.org" /> <script type="text/javascript"> //<![CDATA[ function L(B,D){var A=document.createElement("script"),C=document.documentElement.firstChild;A.type="text/javascript";if(A.readyState){A.onreadystatechange=function(){if(A.readyState=="loaded"||A.readyState=="complete"){A.onreadystatechange=null;D()}}}else{A.onload=function(){D()}}A.src=B;C.insertBefore(A,C.firstChild)}; // async loading of javascript files, starting asap. L("http://example.com/example.js",function () { doSomething(); }); L("http://example.com/foo.js", function () { fooSomeBar(); }); //]]> </script> </head> <body> </body> </html>
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