MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

function xp_at_level(level)
{
    if (level < 2)
        return 0;

    if (level == 2)
        return 1000;

    if (level <= 126)
        return Math.ceil((Math.pow((level + 5), 5) - Math.pow(6, 5)) / 9.0);

    return Math.round((Math.pow((level + 5), 5) - Math.pow(6, 5)) / 9.0);
}

function xp_to_next_level(level)
{
    if (level < 0 || level > 274)
        return 0;

    return xp_at_level(level + 1) - xp_at_level(level);
}

function percent_xp_to_next_level(level, percent)
{
    return Math.floor(xp_to_next_level(level) * percent / 100.0);
}

function format_xp(mystring)
{
    var result;
    var pos;

    mystring += '';
    if (mystring.length <= 3) {
        result = mystring;
    } else {
        var count = 0;
        result = "";
        for (pos = mystring.length - 3; pos >= 0 && count < 20; pos -= 3, count++) {
            if (result.length == 0)
                result = mystring.substr(pos, 3);
            else
                result = mystring.substr(pos, 3) + "," + result;
        }
        if (pos > -3)
            result = mystring.substr(0, 3+pos) + "," + result;
    }

    return result;
}

function calc_and_display_pxp(index)
{
    var level = parseInt(document.getElementById("pxp_level_input_" + index).value);
    var percent = parseFloat(document.getElementById("pxp_percent_input_" + index).value);

    document.getElementById("pxp_result_" + index).innerHTML = " = " + format_xp(percent_xp_to_next_level(level, percent));

    return false;
}

function hasClass(element, className)
{
    return element.className.indexOf(className) != -1;
}

function createPXPCalculationForms()
{
    var paras = document.getElementsByTagName("p");
    var offset = 0;

    for (var index = 0; index < paras.length; index++) {
        if (hasClass(paras[index], "calc-pxp")) {
            var form = document.createElement("form");
            var input1 = document.createElement("input");
            var input2 = document.createElement("input");
            var input3 = document.createElement("input");
            var span = document.createElement("span");

            form.setAttribute("onSubmit", "return calc_and_display_pxp(" + offset + ");");
            input1.setAttribute("size", "6");
            input1.setAttribute("value", "200");
            input1.setAttribute("id", "pxp_level_input_" + offset);

            input2.setAttribute("size", "6");
            input2.setAttribute("value", "10");
            input2.setAttribute("id", "pxp_percent_input_" + offset);

            input3.setAttribute("type", "button");
            input3.setAttribute("value", "Calculate PXP");
            input3.setAttribute("onclick", "javascript:calc_and_display_pxp(" + offset + ");");

            span.setAttribute("id", "pxp_result_" + offset);
            span.innerHTML = "??? xp";

            form.appendChild(document.createTextNode("Level: "));
            form.appendChild(input1);
            form.appendChild(document.createTextNode(" Percent: "));
            form.appendChild(input2);
            form.appendChild(input3);
            form.appendChild(span);

            paras[index].appendChild(form);
            offset++;
        }
    }
}

addOnloadHook(createPXPCalculationForms);