mondit.js

// ==UserScript==
// @name         Mondit
// @namespace    http://tampermonkey.net/
// @version      0.6
// @description  try to take over the world!
// @author       You
// @match        https://mondit.alpari-ru.dom/monitoring/app
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

const isBlackBackground = true;
const isFilterOn = true;

const css = {
  blackBackground: `#app {background: black !important;}`,
  dataFilter: `#app > .table tr {display: none;}`,
  custom: `
    .time.time {
      right: 0;
      color: gray;
      background: black;
    }`
};

const updateTimeout = 200;
const filterText = 'bali_asv';
const getTable = () => document.querySelector('table');


const getTrsFromTable = table => table.querySelectorAll('tr');
const checkIsBaliText = text => text === filterText;
const checkIsBali = tr => checkIsBaliText(tr.firstElementChild.innerText);
const showTr = tr => tr.style.display = 'table-row';
const showBali = (table = getTable()) => getTrsFromTable(table).forEach(tr => checkIsBali(tr) && showTr(tr));

const addStylesToPage = css => {
  const head = document.head;
  const style = document.createElement('style');
  head.appendChild(style);
  style.type = 'text/css';
  style.appendChild(document.createTextNode(css));
}


addStylesToPage(css.custom);
if (isFilterOn) {
  const showBaliInterval = setInterval(showBali, updateTimeout);
  addStylesToPage(css.dataFilter);
}
if (isBlackBackground) {
  addStylesToPage(css.blackBackground);
}

})();