update

backend/tutorials/async-await.js

@@ -1,6 +1,7 @@
 // https://javascript.info/async-await
 
 // A async function always returns a promise. Other values are wrapped in a resolved promise automatically.
+// Async e Await sono solo "sintassi zuccherina" per rendere l'utilizzo delle Promise più semplice
 
 async function f1() {
     return 1;
@@ -23,4 +24,16 @@ async function f2() {
     console.log(result); // "done!"
   }
   
-  f2();
+  f2();
+
+  // Domande
+  // 
+  // Why await only works in async function in javascript?
+  // https://stackoverflow.com/questions/49640647/why-await-only-works-in-async-function-in-javascript
+  //
+  // Why using async-await
+  // https://stackoverflow.com/questions/42624647/why-use-async-when-i-have-to-use-await
+  //
+  // Si faccia presente che non è possibile creare da zero una funzione asincrona (come
+  // setInterval o fetch)
+  // https://stackoverflow.com/questions/61857274/how-to-create-custom-asynchronous-function-in-javascript

backend/tutorials/othertests.js

@@ -0,0 +1,11 @@
+async function exampleAsyncFunction() {
+    console.log('Before await');
+    await new Promise(function(resolve, reject) {
+        setTimeout(() => resolve("done"), 500);
+      }); // Pauses execution here until the promise resolves.
+    console.log('After await');
+  }
+  
+  console.log('Start');
+  exampleAsyncFunction();
+  console.log('End');