var Init = { //样式表文件目录路径 baseSkinUrl : "http://www.19ued.com/skin/1006/css/", //样式表文件名称列表 styles : ["default", "skin1", "skin2", "skin3", "skin4", "skin5", "skin6", "skin7", "skin8", "skin9"], //样式cookie的key值 cookieKey : "css9_blog_random_css", //定义方法，获取min至max间的随机数，包含min及max getRandomNum : function(min, max){ return min + Math.floor(Math.random() * (max - min + 1)); }, //定义方法，获取cookie值 getCookie : function(name) { var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)")); if (arr != null) { return unescape(arr[2]); } return null; }, //定义方法，设置cookie值 setCookie : function(sName,sValue,objHours,sPath,sDomain,bSecure){ var sCookie = sName + "=" + encodeURIComponent(sValue); if (objHours) { var date = new Date(); var ms = objHours * 3600 * 1000; date.setTime(date.getTime() + ms); sCookie += ";expires=" + date.toGMTString(); } if (sPath) { sCookie += ";path=" + sPath; } if (sDomain) { sCookie += ";domain=" + sDomain; } if (bSecure) { sCookie += ";secure"; } document.cookie=sCookie; }, //定义方法，通过获取随机数随机加载CSS loadCSS : function(){ var length = this.styles.length, random = this.getRandomNum(0, length-1), cookieStyle = this.getCookie(this.cookieKey), currentStyle = "default"; //如果当前随机取到的样式与cookie中样式相同，则重新计算随机数 while(this.styles[random] == cookieStyle) { random = this.getRandomNum(0, length-1) } currentStyle = this.styles[random]; //将新样式存入cookie，cookie有效时间为24小时 this.setCookie(this.cookieKey, currentStyle, 24, "/", "19ued.com", false); //若样式名称不为"default"默认样式，则向标签中写入定制样式 if(currentStyle != "default") { document.write(''); } } } Init.loadCSS();