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Slack: jump to the newest message

Adds an Alt+B shortcut that instantly scrolls the open channel down to the newest message.

Code to copy

// Press Alt+B to jump to the newest message in the open channel
function scrollToBottom(e) {
  if (e.altKey && (e.key === 'b' || e.key === 'B')) {
    e.preventDefault();
    const list = document.querySelector('.c-virtual_list__scroll_container');
    if (list) {
      list.scrollTop = list.scrollHeight;
    }
  }
}
document.addEventListener('keydown', scrollToBottom, true);

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's JavaScript panel and save — it runs on every page visit.