错误处理

js/basic.js

@@ -185,10 +185,11 @@ function on_fail(msg, sta) {
         console.warn("-----  Too many failure, temporary stop HTTP ------");
         send_alert("很抱歉，网络错误数量过多，暂时终止HTTP功能30s");
     }
+    let vurl = "";
     try {
-        let vurl = " : "+this.url.substring(7, 12);
+        vurl = " : "+this.url.substring(7, 12);
     }catch (e) {
-        let vurl = "";
+        vurl = "";
     }
     send_alert("很抱歉，网络错误，请查看 Console" + vurl);
     console.warn("-----   网络请求失败 ---------");