convert minutes to seconds in javascript code example

Example 1: javascript convert seconds to minutes seconds

function convertHMS(value) {
    const sec = parseInt(value, 10); // convert value to number if it's string
    let hours   = Math.floor(sec / 3600); // get hours
    let minutes = Math.floor((sec - (hours * 3600)) / 60); // get minutes
    let seconds = sec - (hours * 3600) - (minutes * 60); //  get seconds
    // add 0 if value < 10; Example: 2 => 02
    if (hours   < 10) {hours   = "0"+hours;}
    if (minutes < 10) {minutes = "0"+minutes;}
    if (seconds < 10) {seconds = "0"+seconds;}
    return hours+':'+minutes+':'+seconds; // Return is HH : MM : SS
}

Example 2: how to convert minutes into seconds in javascript

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>convert minutes to seconds in javascript</title>
</head>
<body>
  <script type = "text/javascript">
    function convertMinutestoSeconds(minutes) 
    {
      return Math.floor(minutes * 60);
    }
    var minutesToSeconds = convertMinutestoSeconds(2); // convert minutes to second javascript 
    document.write( "Result of converting minutes to seconds :- " + minutesToSeconds ); 
 
  </script>  
</body>
</html>

Example 3: convert seconds to minutes javascript

// just added 2 formats in Glorious Guanaco code
function secondsToHms(value) {
    const sec = parseInt(value, 10); 
    let hours = Math.floor(sec / 3600); 
    let minutes = Math.floor((sec - hours * 3600) / 60); 
    let seconds = sec - hours * 3600 - minutes * 60;
    if (hours < 10) {      hours = '0' + hours;    }
    if (minutes < 10) {      minutes = '0' + minutes;    }
    if (seconds < 10) {      seconds = '0' + seconds;    }
    if (hours == 0) {
      return +minutes + ':' + seconds; // Return in MM:SS format
    } else {
      return hours + ':' + minutes + ':' + seconds; // Return in HH:MM:SS format
    }
  }