封装cookie,自定义过期时间,domain,path

//存储cookie
function setCookie(name, val, obj) {
  let {
    day,
    domain,
    path
  } = obj;
  if (!day) {
    day = 1;
  }
  if (!domain) {
    domain = document.domain;
  }
  if(!path){
    path='/'
  }
  var str = name + "=" + escape(val) + ";domain=" + domain + ";path=" + path + ";";
  var date = new Date();
  date.setTime(date.getTime() + day * 24 * 60 * 60 * 1000);
  str += ";expires=" + date.toString();
  document.cookie = str;
}

　　

//获取cookie
function getCookie(objName) {
  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]);
  }
}

　　

//删除cookie
function delCookie(name){
      var date = new Date();
      date.setTime(date.getTime() - 10000);
      document.cookie = name + "=a; expires=" + date.toString();
 }