Spread operator

function myfunc(arg,arg2,arg3,arg4){
  console.log(arg);
  console.log(arg2);
  console.log(arg3);
  console.log(arg4);
}

myfunc("test","test2","test3","test4"); //The typical way to do it.


args = ["test","test2","test3","test4"];
myfunc(args); //You can't do this!

myfunc.apply(null,args); //You could do this

myfunc(...args); //but isn't this easier?

//======

//Add some arrays:
var mid = ["song","that","never"];

var lyrics = ["this","is","the",...mid,"ends"];
console.log(...lyrics);
console.log(lyrics.join(" "));

//console.log(...lyrics);

//======