JS使用cookie设置样式的方法

本文实例讲述了JS使用cookie设置样式的方法。分享给大家供大家参考，具体如下：

var styleShow = ["blackgreen", "purple"];
var path = "/";
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);
  }
};

更多关于Javascript相关内容感兴趣的读者可查看本站专题：《Javascript中json操作技巧总结》、《Javascript切换特效与技巧总结》、《Javascript查找算法技巧总结》、《Javascript动画特效与技巧汇总》、《Javascript错误与调试技巧总结》、《Javascript数据结构与算法技巧总结》、《Javascript遍历算法与技巧总结》及《Javascript数学运算用法总结》

希望本文所述对大家Javascript程序设计有所帮助。