Defining Functions

You define a function by using the function keyword followed by a name that describes the use of the function, a list of zero or more arguments in (), and a block of one or more code statements in {}. For example, the following is a function definition that writes "Hello World" to the console:

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function myFunction(){
  console.log("Hello World");
}

To execute the code in myFunction(), all you need to do is add the following line to the main JavaScript or inside another function:

myFunction();