JustDice Chat Ignore

// ==UserScript==
// @name        Just Dice Ignore Functionality
// @namespace   Gray
// @description Does what it says.
// @include     https://just-dice.com/*
// @version     1
// @tip     1BxDR3sHBn2yHjamLuGi5H6bR7J1NBy2Do (works with input.io)
// ==/UserScript==

$(function() {
    var data = localStorage.getItem('ignoredUsers'),
        userList = {},
        ignoreList = data ? JSON.parse(data) : {},
        chatEvent = socket['$events'].chat;
        $panel = $('#account').children('.panel'),
        $heading = $('<h3>').text('Ignore Users in Chat'),
        $list = $('<ul>'),
        $input = $('<input>').attr('placeholder', 'User ID'),
        $button = $('<button>').text('Ignore');

    $panel.append($heading);
    $panel.append($('<p>').text('Click users to remove them from the ignore list.'));
    $panel.append($list, $input, ' ', $button);

    socket.removeAllListeners('chat');
    socket.on('chat', function(txt, date) {
        var txtdata = txt.match(/^\(([0-9]+)\) <([^>]+)>/),
            id = parseInt(txtdata[1],10),
            name = txtdata[2];

        // Update username
        if(!userList[id] || userList[id] !== name) {
            updateUser(id, name);
        }

        if(typeof ignoreList[id] !== 'string') {
            chatEvent(txt, date);
        }
    });

    $list.on('click', 'a', function() {
        var $el = $(this),
            id = $el.attr('data-userid');
        delete ignoreList[id];
        $el.parent().fadeOut();
    });

    $button.on('click', function() {
        var id = parseInt($input.val(), 10),
            name = userList[id] || "[unknown]";

        if(!ignoreList[id]) {
            ignoreList[id] = name;
            updateList();
        }

        $input.val('');
        $input.focus();
    });

    function updateUser(id, name, i) {
        userList[id] = name;
        if(ignoreList[id]) {
            ignoreList[id] = name;
            updateList();
        }
    }

    function updateList() {
        localStorage.setItem('ignoredPlayers', JSON.stringify(ignoreList));

        $list.empty();
        for(var id in ignoreList) {
            if(!ignoreList.hasOwnProperty(id)) {
                continue;
            }
            name = ignoreList[id];
            $liEl = $('<li>').appendTo($list),
            $a = $('<a>').text('('+id+') <'+name+'>').appendTo($liEl).attr('data-userid', id);
        }
    }

    // Array Remove - By John Resig (MIT Licensed) // Thanks John!
    function arrayRemove(array, from, to) {
        var rest = array.slice((to || from) + 1 || array.length);
        array.length = from < 0 ? array.length + from : from;
        return array.push.apply(array, rest);
    };

    updateList();
});