if (code === null || code === "") {

let local = window.location.href,

appid = "wx5ccc279b2823a9bd";

window.location.href = `https://open.weixin.qq.com/connect/oauth2/authorize?appid=${appid}&redirect_uri=${encodeURIComponent(local)}&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect`;

} else {

这么获取后

errcode:40029

errmsg:"invalid code, rid: 66bc4f62-6fd1e4d4-413858cd"

始终返回这个 求解答 回调地址后台也配置了 code也没有二次使用