On TomTom Runner MySports site, convert Speed in MPH to Pace in minutes per mile

_README.md

You'll need to click "laps" before running the bookmarklet.

source.js

function pad(n, width, z) {
  z = z || '0';
  n = n + '';
  return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}

var convertMphToMinPerMile = function(mph){
  if (typeof(mph) !== "number"){
    mph = Number(mph)
  }

  secondsPerMile = 3600.0 / mph
  minutes = Math.floor(secondsPerMile / 60)
  seconds = Math.floor(secondsPerMile % 60)
  minPerMile = minutes + ":" + pad(seconds, 2)
  return minPerMile
}

var getSpeedColumn = function(){
  header = $('div.splits-laps-table:not(.ng-hide) thead tr th');
  var toReturn = "";
  header.each(function(index){
    //console.log($(this).text());
    //console.log($(this).text() === "Speed");
    if ($(this).text() === "Speed"){
      $(this).text("Pace")
      toReturn = index;
    };
  });

  return toReturn;
}

var iterateLaps = function(ixSpeedColumn){
  trLaps = $('div.splits-data-container:not(.ng-hide) tr[ng-repeat*="lap"]');
  trLaps.each(function(index){
    tdSpeed = $(this).find('td:eq(' + ixSpeedColumn + ')')
    sSpeed = $(tdSpeed).text()
    $(tdSpeed).text(convertMphToMinPerMile(sSpeed))
  });
}

iterateLaps(getSpeedColumn())