A Hello World! example of a bookmarklet supporting running a remote script.

Save this link as a bookmark, go to another website somewhere, then click the bookmark!

It should add "Hello World!" to the top of the page, and turn the background orange

The Details

Bookmark Code (href link):

javascript:(function(){s=document.createElement('script');s.src='http://mookstar.co.uk/bookmarklets/helloworld.js';document.body.appendChild(s);})()

helloworld.js Code:

document.body.innerHTML = "<h1 style='font-size: 100pt'>Hello World!<h1>" + document.body.innerHTML;
document.body.style.backgroundColor = "#FF9900";