fix(www/webrtc): update 1080x720~1280x720 as default selected resolution in webrtc. (#2645)

www/webrtc/index.html

@@ -122,16 +122,16 @@
         };
       });
 
-      ZLMRTCClient.GetAllScanResolution().forEach((r,i)=>{
+      ZLMRTCClient.GetAllScanResolution().forEach((r,i) => {
           opt = document.createElement('option');
-          opt.text = r.label +"("+r.width+"x"+r.height+")";
+          opt.text = `${r.label}(${r.width}x${r.height})`;
           opt.value = r;
+          if (1080*720 <= r.width * r.height && r.width * r.height <= 1280*720) {
+              opt.selected = true;
+          }
           document.getElementById("resolution").add(opt,null)
+      });
 
-          //console.log(opt.text.match(/\d+/g))
-
-        
-      })
       function start_play(){
         let elr = document.getElementById("resolution");
         let res = elr.options[elr.selectedIndex].text.match(/\d+/g);