Optimize index file code format

www/webrtc/index.html

@@ -270,19 +270,20 @@
         }
       }
 
-
       function on_click_to_play(app, stream) {
         console.log(`on_click_to_play: ${app}/${stream}`);
         var url = `${document.location.protocol}//${window.location.host}/index/api/webrtc?app=${app}&stream=${stream}&type=play`;
         document.getElementById('streamUrl').value = url;
         start();
       }
+
       function clearStreamList() {
         let content = document.getElementById("olstreamlist");
           while (content.hasChildNodes()) {
             content.removeChild(content.firstChild);
           }
       }
+
       function fillStreamList(json) {
           clearStreamList();
           if (json.code != 0 || !json.data) {
@@ -311,6 +312,7 @@
             }
           }
       }
+
       async function getData(url) {
         const response = await fetch(url, {
             method: 'GET'
@@ -319,11 +321,13 @@
         //console.log(data);
         return data;
       }
+
       function get_media_list() {
         let url = document.location.protocol+"//"+window.location.host+"/index/api/getMediaList?secret=035c73f7-bb6b-4889-a715-d9eb2d1925cc";
         let json = getData(url);
         json.then((json)=> fillStreamList(json));
       }
+      
       setInterval(() => {
        // get_media_list();
       }, 5000);