微信公众号登录(微信浏览器直接拉起微信授权登录)

const appid = "wxcf05d4b9dd7faaaa"
                            const redirect_uri = encodeURI("http://www.aaaa.com/wechat?Isweixin=true")
                            window.location.href =
                                "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" +
                                appid + "&redirect_uri=" + redirect_uri +
                                "&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect"