<html> <head> <title></title> <meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0"> <link href="stylesheet1.css" type="text/css" rel="stylesheet" id="mycss"> <script language="javascript"> var turnback=false; function setCSS() { mycss.styleSheet.cssText=""; mycss.styleSheet.addImport(turnback?"stylesheet1.css":"stylesheet2.css"); turnback=!turnback; } </script> </head> <body> StyleSheet1.CSS样式代码: BODY { background-color: Black; } StyleSheet2.CSS样式代码: BODY { background-color: maroon; } <button onclick="setCSS()" type="button">切换背景颜色</button> </body> </html>
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