jellyfin-web/dashboard-ui/scripts/extensions.js

function getWindowLocationSearch(win) {

    var search = (win || window).location.search;

    if (!search) {

        var index = window.location.href.indexOf('?');
        if (index != -1) {
            search = window.location.href.substring(index);
        }
    }

    return search || '';
}

function getParameterByName(name, url) {
    name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regexS = "[\\?&]" + name + "=([^&#]*)";
    var regex = new RegExp(regexS, "i");

    var results = regex.exec(url || getWindowLocationSearch());
    if (results == null)
        return "";
    else
        return decodeURIComponent(results[1].replace(/\+/g, " "));
}

function replaceQueryString(url, param, value) {
    var re = new RegExp("([?|&])" + param + "=.*?(&|$)", "i");
    if (url.match(re))
        return url.replace(re, '$1' + param + "=" + value + '$2');
    else if (value) {

        if (url.indexOf('?') == -1) {
            return url + '?' + param + "=" + value;
        }

        return url + '&' + param + "=" + value;
    }

    return url;
}

function parseISO8601Date(s, options) {

    options = options || {};

    // parenthese matches:
    // year month day    hours minutes seconds
    // dotmilliseconds
    // tzstring plusminus hours minutes
    var re = /(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(\.\d+)?(Z|([+-])(\d{2}):(\d{2}))?/;

    var d = s.match(re);

    // "2010-12-07T11:00:00.000-09:00" parses to:
    //  ["2010-12-07T11:00:00.000-09:00", "2010", "12", "07", "11",
    //     "00", "00", ".000", "-09:00", "-", "09", "00"]
    // "2010-12-07T11:00:00.000Z" parses to:
    //  ["2010-12-07T11:00:00.000Z",      "2010", "12", "07", "11",
    //     "00", "00", ".000", "Z", undefined, undefined, undefined]

    if (!d) {

        throw "Couldn't parse ISO 8601 date string '" + s + "'";
    }

    // parse strings, leading zeros into proper ints
    var a = [1, 2, 3, 4, 5, 6, 10, 11];
    for (var i in a) {
        d[a[i]] = parseInt(d[a[i]], 10);
    }
    d[7] = parseFloat(d[7]);

    // Date.UTC(year, month[, date[, hrs[, min[, sec[, ms]]]]])
    // note that month is 0-11, not 1-12
    // see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date/UTC
    var ms = Date.UTC(d[1], d[2] - 1, d[3], d[4], d[5], d[6]);

    // if there are milliseconds, add them
    if (d[7] > 0) {
        ms += Math.round(d[7] * 1000);
    }

    // if there's a timezone, calculate it
    if (d[8] != "Z" && d[10]) {
        var offset = d[10] * 60 * 60 * 1000;
        if (d[11]) {
            offset += d[11] * 60 * 1000;
        }
        if (d[9] == "-") {
            ms -= offset;
        } else {
            ms += offset;
        }
    } else if (!options.toLocal) {
        ms += new Date().getTimezoneOffset() * 60000;
    }

    return new Date(ms);
}