function setActiveStyleSheet(title) { var i, a, main; for(i=0; (a = document.getElementsByTagName("link")[i]); i++) { if(a.getAttribute("rel").indexOf("style") != -1 a.getAttribute("title")) { a.disabled = true; if(a.getAttribute("title") == title) a.disabled = false; } } }
function getActiveStyleSheet() { var i, a; for(i=0; (a = document.getElementsByTagName("link")[i]); i++) { if(a.getAttribute("rel").indexOf("style") != -1 a.getAttribute("title") !a.disabled) return a.getAttribute("title"); } return null; }
function getPreferredStyleSheet() { var i, a; for(i=0; (a = document.getElementsByTagName("link")[i]); i++) { if(a.getAttribute("rel").indexOf("style") != -1 a.getAttribute("rel").indexOf("alt") == -1 a.getAttribute("title") ) return a.getAttribute("title"); } return null; }
function createCookie(name,value,days) { if (days) { var date = new Date(); date.setTime(date.getTime()+(days*24*60*60*1000)); var expires = "; expires="+date.toGMTString(); } else expires = ""; documents.cookie = name+"="+value+expires+"; path=/"; }
function readCookie(name) { var nameEQ = name + "="; var ca = documents.cookie.split(';'); for(var i=0;i ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); } return null; }
window.onload = function(e) { var cookie = readCookie("style"); var title = cookie ? cookie : getPreferredStyleSheet(); setActiveStyleSheet(title); }
window.onunload = function(e) { var title = getActiveStyleSheet(); createCookie("style", title, 365); }
var cookie = readCookie("style"); var title = cookie ? cookie : getPreferredStyleSheet(); setActiveStyleSheet(title);
link rel="stylesheet" type="text/CSS" href="css.css" /> link rel="stylesheet" type="text/CSS" href="aaa.css" title="aaa" /> link rel="stylesheet" type="text/CSS" href="bbb.css" title="bbb" />
好了,我们现在就可以在页面中,增加切换风格的链接了:
a href="#" onclick="setActiveStyleSheet('',1); return false;">默认样式-白色/a> a href="#" onclick="setActiveStyleSheet('aaa',1); return false;">样式一-蓝色/a> a href="#" onclick="setActiveStyleSheet('bbb',1); return false;">样式二-橙色/a>