Colors the selected elements in random colors. Launch: colorBlocks ('. random');

colorBlocks.js

const colorBlocks = (block) => {
  const items = document.querySelectorAll(block);
  items.forEach(item => {
    let color = (Math.random().toString(16) + '000000').substring(2, 8).toUpperCase();
    item.style.setProperty('--bg-color', '#' + color);
  })
}

colorBlocks('.random');