Replacing keyboard button with another one in input?

Question

JavaScript

Hello ! I can’t find a solution in any way, how to print special characters in the input field when clicking on the keyboard arrows?
Let's say there is an input field:
And this function:
var symbol = function(e) {
if (e.keyCode == 38) {
return String.fromCharCode('"\u00A9"');
}
}
Why doesn't the © sign appear in the input field when the up arrow is pressed?

Answer 1

You are returning the character but not inserting it.
Suppose you want to insert this character into <div id="some_id"></div>
To, your code should look something like this:

var symbol = function(e) {
  if (e.keyCode == 38) {
  var tId = document.getElementById('some_id'),
        copySymb = String.fromCharCode('"\u00A9"');

  tId.innerHTML = copySymb;
  } 
}