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cubensosgmail.com / worldometer-corona-deaths-per-million-added

// ==UserScript==
// @name         worldometer-corona-deaths-per-million-added
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  adds column for deaths per 1 million of population
// @author       You
// @match        https://www.worldometers.info/coronavirus/
// @grant        none
// @license MIT
// ==/UserScript==

(function() {
    'use strict';

    var spalteNeu = document.createElement('th');
    spalteNeu.width = '30;';
    spalteNeu.innerHTML = 'Tot&nbsp;Deaths/<br />1M pop';
    document.getElementById('main_table_countries_today').getElementsByTagName('thead')[0].getElementsByTagName('tr')[0].appendChild(spalteNeu);

    var anzahl = document.getElementById('main_table_countries_today').getElementsByTagName('tbody')[0].getElementsByTagName('tr').length;
    var i = 0;
    while (i < anzahl) {

        var cases0 = document.getElementById('main_table_countries_today').getElementsByTagName('tbody')[0].getElementsByTagName('tr')[i].getElementsByTagName('td')[1].innerHTML;
        var deaths0 = document.getElementById('main_table_countries_today').getElementsByTagName('tbody')[0].getElementsByTagName('tr')[i].getElementsByTagName('td')[3].innerHTML;
        var casespm0 = document.getElementById('main_table_countries_today').getElementsByTagName('tbody')[0].getElementsByTagName('tr')[i].getElementsByTagName('td')[8].innerHTML;

        cases0 = cases0. replace(",", "");
        deaths0 = deaths0. replace(",", "");
        casespm0 = casespm0. replace(",", "");

        cases0 = parseInt(cases0);
        deaths0 = parseInt(deaths0);
        casespm0 = parseInt(casespm0);

        var deathspm0 = (casespm0/cases0)*deaths0;
        deathspm0 = deathspm0.toFixed(2);
        var eintrag0 = document.createElement('td');
        eintrag0.innerHTML = deathspm0;
        eintrag0.style.fontWeight = "bold";
        eintrag0.style.textAlign = "right";

        document.getElementById('main_table_countries_today').getElementsByTagName('tbody')[0].getElementsByTagName('tr')[i].appendChild(eintrag0);

        i++;
    }

})();