where does function myfunction should be executed code example

Example 1: functions in javascript

function myFunction(var1, var2) {
  return var1 * var2;
}
3
How to create a function in javascriptJavascript By TechWhizKid on Apr 5 2020
function addfunc(a, b) {
  return a + b;
  // standard long function
}

addfunc = (a, b) => { return a + b; }
// cleaner faster way creating functions!

Example 2: function js

function myFunc(param) {
  return param
}
console.log(myFunc("Hello World"))