How to parse a duration string into seconds with Javascript?

Question

I\'m trying to parse a user input string for duration (into seconds) with Javascript.

Here are some example inputs that I\'d like to be able to deal with:

Answer 1

Is the order of days/hours/minutes in your string guaranteed? If not, it may be easier to just do a separate RegEx for each. Something like this?

function getSeconds(str) {
  var seconds = 0;
  var days = str.match(/(\d+)\s*d/);
  var hours = str.match(/(\d+)\s*h/);
  var minutes = str.match(/(\d+)\s*m/);
  if (days) { seconds += parseInt(days[1])*86400; }
  if (hours) { seconds += parseInt(hours[1])*3600; }
  if (minutes) { seconds += parseInt(minutes[1])*60; }
  return seconds;
}