JAVASCRIPT

js function

function myfunction() {
  console.log("function");
};

myfunction() //Should say "function" in the console.

function calculate(x, y, op) {
  var answer;
  if ( op = "add" ) {
    answer = x + y;
  };
  else if ( op = "sub" ) {
    answer = x - y;
  };
  else if ( op = "multi" ) {
    answer = x * y;
  };
  else if ( op = "divide" ) {
    answer = x / y;
  };
  else {
    answer = "Error";
  };
  return answer;
};

console.log(calculate(15, 3, "divide")); //Should say 5 in console.
//I hope I helped!

js function

function name(parameter1, parameter2, parameter3) {
// what the function does
}

js function

function MyFunction() {
	/* Function Here */
}

js function

function myfunction(p1,p2){
    return p1+p2 // للجمع بين القيمتان
}
console.log(myfunction(10,20)) // النتيجة 30

define function js

var myFunction = function(p1, p2, p3){
	return "foo";
};

define function JavaScript

//! Button Click Event
//! regular function
document.querySelector("button").addEventListener('click', handlClick);

function handlClick() {
    alert("I got clicked!")//just to show it works
  
  //what to do when click detected
}

//!anonymous function
document.querySelector("button").addEventListener('click',function handlClick() {
    alert("I got clicked!")//just to show it works
  
  //what to do when click detected
});

Function syntax Js

function funkyFunction(music, isWhiteBoy) {
  if (isWhiteBoy) {
    console.log('Play: ' +  music);
  }
}