封装cookie

// 在浏览器写入cookie的办法是：
// document.cookie('name','zhangsan')

// 封装写入cookie
const setCookie = (name, value, { domain, maxAge, path } = {}) => {
  let cookieString = `${name}=${value}`;
  // 现在写好了name  value  添加过期时间
  if (typeof maxAge === "number") {
    cookieString += `; max-age=${maxAge}`;
  }
  // 添加domain
  if (domain) {
    cookieString += `; domain=${domain}`;
  }
  // 添加path
  if (path) {
    cookieString += `; path=${path}`;
  }
  //  cookieString有了， 把cookie写入浏览器
  document.cookie = cookieString;
};
const getCookie = (name) => {
  // 现在cookie里面是name zhangsan
  // 当执行函数的时候需要打印出name=zhangsan
  // 先取出cookie,把字符串转成数组，从分号开始隔开
  const cookieArray = document.cookie.split("; ");
  //
  let cookieName;
  let cookieValue;
  // 遍历数组
  for (const item of cookieArray) {
    // item 现在是 ['name=zhangsan']
    // 从等号开始隔开 ['name','zhangsan']
    [cookieName, cookieValue] = item.split("=");
    // cookieName = name cookieValue = zhangsan
    if ((cookieName = name)) {
        // 这样就返回我们需要的cookieValue
      return cookieValue;
    }
  }
//   for循环结束，也就终止执行
return
};
// 删除cookie意思也就是，继续调用setCookie，把过期时间设置为0
const removeCookie = (name) => {
    setCookie(name,'',0)
};
// 用export 导出三个方法
export { setCookie, getCookie, removeCookie };