<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>无标题文档</title> <style> p { border:10px solid #ccc; background:#FFC; width:400px; padding:20px; font-size:16px; font-family:微软雅黑; margin:40px auto 0; } </style> <script> window.onload = function () { var oP = document.getElementsByTagName('p')[0]; var oSpan = oP.getElementsByTagName('span')[0]; var oA = oP.getElementsByTagName('a')[0]; var str = oSpan.innerHTML; var onOff = true; oA.onclick = function () { if ( onOff ) { oSpan.innerHTML = str.substring(0, 18); oA.innerHTML = '>>展开'; } else { oSpan.innerHTML = str; oA.innerHTML = '>>收缩'; } onOff = !onOff; }; }; </script> </head> <body> <p><span>妙味课堂是一支独具特色的IT培训团队，妙味反对传统IT教育枯燥乏味的教学模式，妙味提供一种全新的快乐学习方法！<br /> 2013年底，妙味课堂最新推出“远程培训”服务，受到很多朋友们的喜爱与追捧，我们必将更加努力的帮助远程学习的朋友实现技术提升</span>……<a href="javascript:;">>>收缩</a></p> </body> </html>