MediaWiki:Calculator.js/Mana Regeneration.js

Note: After saving, you may have to bypass your browser's cache to see the changes.

• Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
• Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
• Internet Explorer: Hold Ctrl while clicking Refresh, or press Ctrl-F5
• Opera: Clear the cache in Tools → Preferences

/**
 * Calculator that calculates your mana regenerated per second based on Meditation, Focus, Intelligence, and equipped MR.
 */
var ManaPerSecondCalculator = Calculator.extend({
    init: function() {
        var calculate = function(input, label) {
            if (input.value) {
                if (isNumeric(input.value)) {
                    var percentChance = Math.pow(input.value, (5 / 9));
                    if (percentChance > 100) {
                        percentChance = 100;
                    }
                    percentChance = percentChance.toFixed(3);
                    removeChildren(label);
                    label.appendChild(document.createTextNode(percentChance + '% Chance'));
                }
            }
        };
        var calcTableRow = document.createElement('tr');
        var calcTableCell = document.createElement('td');
        var luckInput = document.createElement('input');
        var calculateButton = document.createElement('input');
        var percentChanceLabel = document.createElement('div');

        calcTableCell.style.textAlign = 'right';
        calcTableCell.appendChild(document.createTextNode('Luck:'));
        calcTableRow.appendChild(calcTableCell);

        luckInput.id = 'luckInput';
        luckInput.maxLength = '4';
        luckInput.type = 'text';
        luckInput.style.width = '35px';
        luckInput.onkeyup = function(keyEvent) {
            var keyID = window.event ? event.keyCode : keyEvent.keyCode;
            if (keyID == 13)
                calculate(luckInput, percentChanceLabel);
        };
	calcTableCell = document.createElement('td');
        calcTableCell.appendChild(luckInput);
        calcTableRow.appendChild(calcTableCell);

        calculateButton.type = 'button';
        calculateButton.value = 'Calculate >>';
        calculateButton.onclick = function() {
            calculate(luckInput, percentChanceLabel);
        };
	calcTableCell = document.createElement('td');
        calcTableCell.appendChild(calculateButton);
        calcTableRow.appendChild(calcTableCell);

        percentChanceLabel.appendChild(document.createTextNode('0.000% Chance'));
        percentChanceLabel.style.textAlign = 'right';
        percentChanceLabel.style.width = '110px';
	calcTableCell = document.createElement('td');
        calcTableCell.appendChild(percentChanceLabel);
        calcTableRow.appendChild(calcTableCell);

        this._super(calcTableRow, 'ManaPerSecond', 'Mana Per Second', 4);
    }
});

function searchForCalculators() {
    var calculators = document.getElementsByTagName('div');

    for (var i in calculators) {
         if (calculators[i].id == 'ManaPerSecond') {
             new ManaPerSecondCalculator();
         }
    }
}
addOnloadHook(searchForCalculators);