02_advanced/faq/interval-funktionreferenz.js

@@ -0,0 +1,11 @@
+const sayHello = () => {
+  console.log('Say hello');
+};
+
+const iv = setInterval(sayHello, 500);
+
+const double = (n, i) => {
+  return n * 2 + i;
+};
+
+const numbers = [1, '2', 3].map(double);