js存取cookie

存cookie封装

/**存cookie */
function setCookie(objName, objValue, objHours) {
  var str = objName + "=" + escape(objValue); //编码
  if (objHours > 0) {//为0时不设定过期时间，浏览器关闭时cookie自动消失
    var date = new Date();
    var ms = objHours * 3600 * 1000;
    date.setTime(date.getTime() + ms);
    str += "; expires=" + date.toGMTString();
  }
  document.cookie = str;
}

取cookie封装

/**取cookie */
function getCookie(objName) {//获取指定名称的cookie的值
  var arrStr = document.cookie.split("; ");
  for (var i = 0; i < arrStr.length; i++) {
    var temp = arrStr[i].split("=");
    if (temp[0] == objName) return unescape(temp[1]);  //解码
  }
  return "";
}

js存cookie原理

/**js存cookie */
document.cookie = "key=value";