review a little

Author: Keillion

1.hello-world/1.minimum-code.html

@@ -49,7 +49,7 @@ <h1 style="font-size: 1.5em;">Read Barcodes from a Camera</h1>
                  */
                 scanner.onUnduplicatedRead = (txt, result) => {
                     alert(txt);
-                    console.log("Unique Code Found: " + result);
+                    console.log("Unique Code Found: ", result);
                 }
                 await scanner.show();
             } catch (ex) {

1.hello-world/11.read-video-requirejs.html

@@ -35,7 +35,7 @@ <h1 style="font-size: 1.5em;">Hello World for RequireJS</h1>
             let pScanner = null;
             document.getElementById('readBarcode').onclick = async function() {
                 try {
-                    let scanner = await (pScanner = pScanner || BarcodeScanner.createInstance());
+                    const scanner = await (pScanner = pScanner || BarcodeScanner.createInstance());
                     scanner.onFrameRead = results => {
                         console.log("Barcodes on one frame:");
                         for (let result of results) {
@@ -44,7 +44,7 @@ <h1 style="font-size: 1.5em;">Hello World for RequireJS</h1>
                     };
                     scanner.onUnduplicatedRead = (txt, result) => {
                         alert(txt);
-                        console.log("Unique Code Found: " + result);
+                        console.log("Unique Code Found: ", result);
                     }
                     await scanner.show();
                 } catch (ex) {