How to print on screen all the parameters of a function

I am trying to pass a function to createTextNode so that I will have printed on screen : i am singing Let It GO & i am dancing as well while singing which are passed to the function through parameters.

The problem is that only the first argument appears.

function sing(song ,dance){
   return`i am singing ${song}`
   callback();
 }

function dance(){
   return "i am dancing as well while singing";
}

let singing=sing("Let It GO","dance");
const elP=document.createElement("p");
const elT=document.createTextNode(singing)
elP.appendChild(elT);    
document.body.appendChild(elP);

Solution

Just reference dance using string interpolation the same way you referenced song like this:

function sing(song ,dance){
   return `i am singing ${song}, ${dance}`;
}
function dance(){
   return "i am dancing as well while singing";
}

let singing=sing("Let It GO", dance());
const elP=document.createElement("p");
const elT=document.createTextNode(singing)
elP.appendChild(elT);    
document.body.appendChild(elP);

However, if the dance function only returns a string, a cleaner approach would be to reference the dance string in the sing() parameter itself as you did with the song string.

In the following I created a function called sing just as you did and simply used ${song} and ${dance} to retrieve the parameters, input the parameter values within the function parentheses itself and use them anywhere I want may it be in a console log or a div or an alert box.

Check this jsFiddle or run the Code Snippet below to see the results of the following code:

var div = document.getElementById("output");

function sing(song, dance) {
  div.innerHTML =  `<p>The song is: <strong>${song}</strong> and the dance is: <strong>${dance}</strong></p>`
}

sing("HipHop", "BreakDance");

<div id="output"></div>