   if (isWechat()){
            document.getElementById("wx").innerText = "当前为微信环境，请点击右上角浏览器中打开"
        }
        let search = window.location.search
        search = search.substring(1,search.length)
        document.getElementById("login").setAttribute("href","dtxuexi://appclient/page/study_feeds?url="+search)
        console.log(unescape(search))
        let imgBase64 = jrQrcode.getQrBase64(unescape(search), {});
        document.getElementById("img").setAttribute