function greet(name) is the function definition. It declares a function named greet that takes a parameter name.
Inside the function block, console.log(“Hello, ” + name + “!”); is the code that will be executed when the function is called. It prints a greeting to the console with the provided name.
greet(“sslabs”); is the function call. It passes the argument “sslabs” to the name parameter of the greet function.
firstly In this example, the add function takes two parameters (a and b) and returns their sum. most importantly The result is stored in the variable result, and then it’s logged to the console.
Assigning functions to variables is also referred to as a function expression.
Arrow functions provide a more concise syntax, especially for simple functions
You can provide default values for function parameters.
The rest parameter allows a get-together to assume an immeasurable work of theses as an bunch.
Passing functions as arguments to other functions is a valid operation
In conslusion :In this example, outerFunction returns innerFunction, and even after the completion of outerFunction’s execution,Furthermore innerFunction retains access to outerVariable.