域名不同无法共享sessionstorage(父项目传参给子项目)

我的项目是父项目和子项目分开时,然后当子项目需要用到父项目登录的信息时,共享参数的几个方法

方法一:
sessionstorage信息共享,父项目中在登录时query里传递相关信息,如userName,token等信息,然后在子项目的html中定义函数去获取然后存到sessionstorage

    <script>
   // 解析父项目中query里的参数
      function getQueryVariable(variable)
      {
            var query = window.location.search.substring(1);
            var vars = query.split("&");
            for (var i=0;i<vars.length;i++) {
                    var pair = vars[i].split("=");
                    if(pair[0] == variable){return pair[1];}
            }
            return(false);
      }
      var token = getQueryVariable('t')
      var userName = getQueryVariable('userName'); // 获取登录人userName
     if(userName){
         sessionStorage.setItem('userName',userName)
     }
      if(token){
        sessionStorage.setItem('token',token)
      }
      </script>

方法二:
从url里携带过来然后进行解析,然后存在vuex或者本地存储里

<script>
function getUrlKey(name) {
  return (
    decodeURIComponent(
      (new RegExp("[?|&]" + name + "=" + "([^&;]+?)(&|#|;|$)").exec(
        location.href
      ) || [, ""])[1].replace(/\+/g, "%20")
    ) || null
  );
}
const orgId=getUrlKey("organizationId")?Base64.decode(getUrlKey("organizationId")):(getStore({name:'orgId'})?getStore({name:'orgId'}):'')
const userId=getUrlKey("userId")?Base64.decode(getUrlKey("userId")):(getStore({name:'userId'})?getStore({name:'userId'}):'')
const mobile=getUrlKey("mobile")?getUrlKey("mobile"):(getStore({name:'mobile'})?getStore({name:'mobile'}):'')
</script>