Use Recursion to Return a Range Array

using recursion to return a range array between the two numbers added

CSS

* {
  box-sizing: border-box;
  transition: all 0.2s;
  scroll-behavior: smooth;
}

JS

function run_function() {
  var my_result = "A Result";
  write_result(my_result);
  return my_result;
}

function rangeOfNumbers(startNum, endNum) {
  if (startNum === endNum) {
    return [startNum];
  } else {
    const endNumMinus = endNum - 1;
    const startNumMinus = startNum - 1;
    const countArray = rangeOfNumbers(startNum, endNumMinus);
    countArray.push(endNum);
    return countArray;
  }
};
console.log(rangeOfNumbers(4, 6));

// this is a common function just to write the content into the result div
function write_result(result) {
  var result_html = document.getElementById("result");
  result_html.innerHTML = result;
}

HTML

<div id='result' class='mb-3 alert alert-primary'>..</div>
<button onclick='run_function();' class='btn btn-primary mb-1'>Run Function</button>

Working Result

..

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