MediaWiki:SwingSpeed.js

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function calculateSwingSpeed() {
  var Speed = 0;
  var SpeedRoundUp = 0;
  var myStamina = parseFloat(document.SwingSpeed.Stamina.value);
  var myWeaponSpeed = parseFloat(document.SwingSpeed.WeaponSpeed.value);
  
  Speed = 15000 / ((myStamina + 100) * myWeaponSpeed);
  SpeedRoundUp = Math.ceil(Speed / 0.25) * 0.25
  document.SwingSpeed.Speed.value = SpeedRoundUp;

}

(function () {
 
  var myElement = document.getElementById('swing-speed');
  myElement.innerHTML = '<form name=\"SwingSpeed\" action=\"\"><span style=\"clear: both;\">Stamina:</span> <input type=\"text\" name=\"Stamina\" size=\"3\" style=\"float: right; text-align: center;\"> <br style=\"clear: both;\"/><span style=\"clear: both;\">Weapon Speed: </span><input type=\"text\" name=\"WeaponSpeed\" size=\"3\" style=\"float: right; text-align: center;\"> <br style=\"clear: both;\"/> <input type=\"button\" value=\"Calculate Swing Speed\" onclick=\"calculateSwingSpeed()\" style=\"font-weight: bold;\"><br style=\"clear: both;\"/><span style=\"clear: both; font-weight: bold;\">Resulting Swing Speed:</span> <input type=\"text\" disabled name=\"Speed\" size=\"4\" style=\"float: right; text-align: right;\"> <br style=\"clear: both;\"/></form>';
 
}());