05_react/uebungen/u02-03_mathfn-modul/assets/js/MathFn.js

@@ -0,0 +1,14 @@
+// Factory Function
+const MathFn = () => {
+  // closures
+  const add = (a, b) => a + b;
+  const subtract = (a, b) => a - b;
+
+  const multiply = (a, b) => a * b;
+  const divide = (a, b) => {
+    return b === 0 ? NaN : a / b;
+  };
+
+  export { add, subtract, multiply, divide };
+};
+export default MathFn;