Way-1
function printMe() {
console.log("printing me");
}
INPUT - printMe;
OUTPUT - printing me
Way-2
function printThis(para){ //parameter
console.log("para");
}
INPUT - printThis("This is a parameter"); // value passed (calling function),argument
OUTPUT - This is a parameter
EXPLANATION - [This is a parameter] mapped with [para]
Way-3
const printMeAgain=function(){
console.log("print this"); //value passed
}
INPUT -printMeAgain()
OUTPUT - print this
Conclusion-
Understanding how functions in JavaScript are been used.