JS使用cookie设置样式的方法

var styleShow = ["blackgreen", "purple"]; var path = "https://www.jb51.net/"; var StyleSwitch = { //设置样式 setStyleSheet: function (StyleName) { 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") == StyleName) { a.disabled = false; this.setCookie("Style", StyleName); } } } }, //获取当前使用样式 getStyleSheet: function () { 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; }, //获取默认样式 getPreferredStyleSheet: function () { 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; }, //获取cookie getCookie: function (name) { var cookieName = encodeURIComponent(name) + "=", cookieStart = document.cookie.indexOf(cookieName), cookieValue = null; if (cookieStart > -1) { var cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieStart == -1) { alert(-2); cookieEnd = document.cookie.length; } cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd)); } for (var i = 0; i < styleShow.length; i++) { if (cookieValue == styleShow[i]) { alert(styleShow[i]); return styleShow[i]; } } return styleShow[0]; }, //生成cookie //name cookie名 //value 值 //expires 过期时间 //path 路径 setCookie: function (name, value, expires, path, domain, secure) { var cookieText = encodeURIComponent(name) + "=" + encodeURIComponent(value) + ";"; if (expires instanceof Date) { cookieText += "expires=" + expires.toGMTString(); } if (path) { cookieText += ";path=" + path; } if (domain) { cookieText += ";domain=" + domain; } if (secure) { cookieText += ";secure"; } document.cookie = cookieText; }, //重置cookie unsetCookie: function (name, path, domain, secure) { this.set(name, "", new Date(0), path, domain, screen); } };

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