minutes to decimal calculator javascript version

function calc_decimal(minutes_val) {
  return Math.round(minutes_val) / 60;
}

console.log(calc_decimal(45));

HTML

<h2>Calculate Minutes to Decimal</h2>
<div class='form-row'>
	<input type='number' name='minutes_val' id='minutes_val'>
  	<button class='btn btn-primary' onclick='calc_decimal_click();'>Calculate Decimal</button>
</div>
<div class='alert alert-primary mt20'>
  <div id='dec_result'></div>
</div>

Javascript

function calc_decimal(minutes_val) {
  return Math.round(minutes_val) / 60;
}
console.log(calc_decimal(45));

function calc_decimal_click() {
  // set a html value here for the result rather than returning it. 
  var minutes_val = document.getElementById("minutes_val").value;
  console.log("minutes_val : " + minutes_val);
  var result = Math.round(minutes_val) / 60;
  console.log("result : " + result);
  // build a nice result string
  var res_string = minutes_val + " Minutes displayed as a Decimal is " + result
  document.getElementById("dec_result").innerHTML = res_string;
}