Add more simple examples

tshemsedinov · tshemsedinov · commit 2b01b5d0dbde · 2024-05-20T15:39:00.000-04:00
diff --git a/JavaScript/7-async-catch.js b/JavaScript/7-async-catch.js
@@ -0,0 +1,28 @@
+'use strict';
+
+const sum = async (a, b) => {
+  if (typeof a === 'number' && typeof b === 'number') {
+    return a + b;
+  }
+  throw new Error('a and b should be numbers');
+};
+
+(async () => {
+
+  const x = 2;
+  const y = 3;
+  const total = await sum(x, y).catch((err) => {
+    console.error({ x, y, err });
+    return NaN;
+  });
+  console.log({ x, y, total });
+
+  const z = 7;
+  const c = 'A';
+  const res = await sum(z, c).catch((err) => {
+    console.error({ z, c, err });
+    return NaN;
+  });
+  console.log({ z, c, res });
+
+})();
diff --git a/JavaScript/8-promise-all.js b/JavaScript/8-promise-all.js
@@ -0,0 +1,26 @@
+'use strict';
+
+const sum = async (a, b) => {
+  if (typeof a === 'number' && typeof b === 'number') {
+    return a + b;
+  }
+  throw new Error('a and b should be numbers');
+};
+
+(async () => {
+
+  const data = [
+    [2, 3],
+    [7, 'A'],
+  ];
+
+  const [total, result] = await Promise.all(
+    data.map((args) =>
+      sum(...args).catch((err) => {
+        console.error(err);
+      })
+    )
+  );
+  console.log({ total, result });
+
+})();
