Merge branch '_dev' of https://github.com/Dynamsoft/barcode-reader-javascript-samples into _dev

Author: Cube-J

2.ui-tweaking/3.read-video-with-external-control.html

@@ -173,7 +173,7 @@ <h1>Customized UI</h1>
                     } catch (ex) {
                         alert('Play video failed: ' + (ex.message || ex));
                     }
-                    updateCurrentResolution();
+                    updateOptions();
                 }
             });
         }

2.ui-tweaking/5.read-video-with-custom-default-ui.html

@@ -190,9 +190,9 @@ <h1>Customized Default UI</h1>
         }
         // when option is selected
         function camOptionSelected(e) {
-            // if (currentCamera.deviceId === e.target.id) {
-            //     return;
-            // }
+            if (currentCamera.deviceId === e.target.id) {
+                return;
+            }
             toggleMaskView();
             camSelectorInput.value = e.target.innerText;
             cameras.forEach(item => {