Merge pull request Swap76#228 from WojciechPreficz/update-default-values

Update default values

Author: Swap76

default_values.js

@@ -0,0 +1,29 @@
+/*
+A JavaScript function can have default parameter value.
+Using default function parameters, you can initialize parameters with default values.
+If you do not initialize a parameter with some value, then the default value of the parameter is undefined.
+*/
+
+const helpGST = (name, age) => {
+ console.log(name, age);
+};
+
+helpGST(); // Output will be undefined undefined
+
+const helpGSTWithDefaultValues = (name, age = 19) => {
+ console.log(name, age);
+};
+
+helpGSTWithDefaultValues("Swapnil"); // Output Swapnil 19
+
+helpGSTWithDefaultValues("Vishal", 23); // Output Vishal 23
+
+/*
+ You can also reuse default parameters to set another default parameter.
+*/
+
+const addOneToANumberAsDefault = (number1 = 1, number2 = number1 + 8) => {
+ console.log(number2);
+};
+
+addOneToANumberAsDefault(); // Output 9