Return statement

JavaScript
1

Tell us what’s happening:

function myFun() {
  console.log("Hello");
  return "World";
  console.log("byebye")
}
myFun();

can anyone explain to me the main function of RETURN statement in this code? why is “world” not displaying in the console?

2

You need to use console.log if you want to print World to the console.
And it needs to be before the return statement or else it won’t get printed.

3

Or you may wrap the function call in the console.log()

4

Functions in JS return value when called. You can see it, if you assign to a variable, or log them directly:

function giveValue() {

}

console.log(giveValue())  // logs undefined

const returnedValue = giveValue()
console.log(returnedValue)  // logs undefined

Even the empty function i defined giveValue returns a value, but since i dont explicitely tell it to return anything specific, it just gives undefined.
Thanks to return statement, we can control what a function returns. One important specification is, once we return a value, the function stops any further code running in its body.

function myFun() {
  console.log("Hello");  // this will log on function call
  return "World";
  console.log("byebye")  // this wont be logged
}

const returnedValue = myFun()  // returnedValue === 'World'
5

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