es6 callback function with parameter code example

Example 1: callback function js

function greeting(name) {
  alert('Hello ' + name);
}

function processUserInput(callback) {
  var name = prompt('Please enter your name.');
  callback(name);
}

processUserInput(greeting);

Example 2: js running function as parameter

function FuncOne(param1) //example function
{
  //Do whatever
}

function FuncTwo(FuncOne, param1) //Function to call FuncOne w/ param
{
  FuncOne(param1); //Write it like you would any normal function call
}