Row culler for https://www.worldometers.info/coronavirus/

console.js

Array
   .from(document.querySelector('#main_table_countries_yesterday > tbody').children)
   .filter(x => !x
       .querySelector(['us', 'germany', 'norway', 'sweden', 'denmark'].map(x => `a[href*='country/${x}']`)))
   .forEach(x => x.parentElement.removeChild(x))