Parses the Halo Waypoint MCC campaign page and calculates your total time as well as a per-mission breakdown of your timings.

speedruns.js

(function() {

  /**
   * Par times for each mission.
   * <mission-id, minutes>
   */
  var parTimes = {
    // Halo 1
    0: { par: 15, name: 'The Pillar of Autumn' },
    1: { par: 20, name: 'Halo' },
    2: { par: 20, name: 'The Truth and Reconciliation' },
    3: { par: 15, name: 'The Silent Cartographer' },
    4: { par: 15, name: 'Assualt on the Control Room' },
    5: { par: 15, name: '343 Guilty Spark' },
    6: { par: 25, name: 'The Library' },
    7: { par: 20, name: 'Two Betrayals' },
    8: { par: 15, name: 'Keyes' },
    9: { par: 15, name: 'The Maw' },

    // Halo 2
    30: { par: 0, name: 'The Armory' },
    31: { par: 15, name: 'Cairo Station' },
    32: { par: 15, name: 'Outskirts' },
    33: { par: 15, name: 'Metropolis' },
    34: { par: 15, name: 'The Arbiter' },
    35: { par: 25, name: 'The Oracle' },
    36: { par: 15, name: 'Delta Halo' },
    37: { par: 15, name: 'Regret' },
    38: { par: 15, name: 'Sacred Icon' },
    39: { par: 15, name: 'Quarantine Zone' },
    40: { par: 20, name: 'Gravemind' },
    41: { par: 15, name: 'Uprising' },
    42: { par: 15, name: 'High Charity' },
    43: { par: 15, name: 'The Great Journey' },

    // Halo 3
    70: { par: 15, name: 'Sierra 117' },
    71: { par: 20, name: 'Crow\'s Nest' },
    72: { par: 20, name: 'Tsavo Highway' },
    73: { par: 15, name: 'The Storm' },
    74: { par: 15, name: 'Floodgate' },
    75: { par: 20, name: 'The Ark' },
    76: { par: 20, name: 'The Covenant' },
    77: { par: 15, name: 'Cortana' },
    78: { par: 20, name: 'Halo' },

    // Halo 4
    104: { par: 15, name: 'Dawn' },
    105: { par: 15, name: 'Requiem' },
    106: { par: 20, name: 'Forerunner' },
    107: { par: 25, name: 'Infinity' },
    108: { par: 20, name: 'Reclaimer' },
    109: { par: 20, name: 'Shutdown' },
    110: { par: 20, name: 'Composer' },
    111: { par: 25, name: 'Midnight' },
    
    // Halo 3: ODST
    168: { par: 3, name: 'Tayari Plaza' },
    169: { par: 4, name: 'Uplift Reserve' },
    170: { par: 9, name: 'Kizingo Boulevard' },
    171: { par: 13, name: 'ONI Alpha Site' },
    172: { par: 10, name: 'NMPD HQ' },
    173: { par: 10, name: 'Kikowani Station' },
    174: { par: 16, name: 'Data Hive' },
    175: { par: 25, name: 'Coastal Highway' },

    // Halo: Reach
    178: { par: 0, name: 'Noble Actual' },
    179: { par: 15, name: 'Winter Contingency' },
    180: { par: 10, name: 'ONI: Sword Base' },
    181: { par: 10, name: 'Nightfall' },
    182: { par: 15, name: 'Tip of the Spear' },
    183: { par: 25, name: 'Long Night of Solace' },
    184: { par: 20, name: 'Exodus' },
    185: { par: 20, name: 'New Alexandria' },
    186: { par: 20, name: 'The Package' },
    187: { par: 20, name: 'The Pillar of Autumn' },
    188: { par: 0, name: 'Epilogue' },
    189: { par: 0, name: 'Lone Wolf' },
  };

  function getBestTimes() {
    var times = $('.best-time').map(function(el) {
      return $(this).text();
    }).get();

    return times.map(function(values) {
      values = values.split(':');
      if (values.length === 1) values = [0, 0, 0];
      return values.map(function(value) {
        return parseInt(value, 10);
      });
    });
  };
  
  function getTotalSeconds() {
    var times = getBestTimes();

    var seconds = times.reduce(function(memo, time) {
      return memo + time[2];
    }, 0);

    var minutes = times.reduce(function(memo, time) {
      return memo + time[1];
    }, 0);

    var hours = times.reduce(function(memo, time) {
      return memo + time[0];
    }, 0);

    return seconds + minutes * 60 + hours * 60 * 60;
  };

  function getPrettyTime(total, sign) {
    var prefix = total < 0 ? '-' :  sign ? '+' : '';
    total = Math.abs(total);
    var hours = Math.floor(total / 3600);
    total = total - hours * 3600;
    var minutes = Math.floor(total / 60);
    var seconds = total - minutes * 60;

    if (minutes < 10) {
      minutes = '0' + minutes;
    }

    if (seconds < 10) {
      seconds = '0' + seconds;
    }

    return prefix + hours + ':' + minutes + ':' + seconds;
  };

  function getParTimeDifferences() {
    var missionIds = $('[data-mission-id]').map(function() {
      return $(this).attr('data-mission-id');
    });

    var times = getBestTimes();
    
    var diff = times.map(function(time, i) {
      var personal = time[0] * 3600 + time[1] * 60 + time[2];
      var par = parTimes[missionIds[i]].par * 60;
      return {
        personal: personal,
        difference: personal - par
      };
    });

    return diff.map(function(obj, i) {
      var par = parTimes[missionIds[i]];
      return {
        'Mission': par.name,
        'Par Time': par.par + ':00',
        'Your Time': getPrettyTime(obj.personal),
        'Difference': getPrettyTime(obj.difference, true)
      };
    });
  };
  
  var total = getTotalSeconds();
  console.log('Total time: ' + getPrettyTime(total));

  var differences = getParTimeDifferences();

  if (typeof console.table === 'function') {
    console.table(differences);
  } else {
    differences.forEach(function(difference) {
      console.log(difference);
    });
  }
})();

Any hints on how to use it?

@illusive-man https://www.trueachievements.com/viewcomment.aspx?commentid=816989

Much appreciated!