MediaWiki:Calculators.js

function bleedResistanceCalculator() {
  var st = Number(document.getElementById("st").value);
  var en = Number(document.getElementById("en").value);
  var ag = Number(document.getElementById("ag").value);
  var lk = Number(document.getElementById("lk").value);
  var bleedRes = Math.floor((((21 - lk)*lk)/2 - 15 + ag + 2*en + 2*st) / 2);
  bleedRes = Math.floor((((21 - lk)*lk)/2 - 15 + ag + 2*en + 2*st) / 2);
  var bleedDmg = Math.floor((1.0 - Math.pow(2.0,-1.0/Math.max(1.0,bleedRes/5.0)))*100);
  document.getElementById("bleedRes").innerHTML = bleedRes;
  document.getElementById("bleedDmg").innerHTML = bleedDmg;
}

$(function () {
  if ($('#bleedResistanceCalculator').length) {
    document.getElementById('bleedResistanceCalculator').innerHTML =
      '<input id="st" type="number" value="5" min ="1" max="15" style="width: 40px">Strength<br>' +
      '<input id="en" type="number" value="5" min ="1" max="15" style="width: 40px">Endurance<br>' +
      '<input id="ag" type="number" value="5" min ="1" max="15" style="width: 40px">Agility<br>' +
      '<input id="lk" type="number" value="5" min ="1" max="15" style="width: 40px">Luck<br>' +
      '<button type="button" onclick="bleedResistanceCalculator()">Submit</button>' +
      '<p>Bleed Resistance: <a id="bleedRes"></a></p>' +
      '<p>% of bleed into damage per second: <a id="bleedDmg"></a></p>';
  }
});