Working on a data-loading application for a client, I got involved in some debugging work more complex than I was ready to handle with Firebug’s console. Access controls limited the problem script to running on the remote server, and (as I quickly tired of uploading new diagnostics) I went looking for a way to manipulate the test environment from my development computer. My answer was to create a mini-bookmarklet that would load and re-load a local test script, allowing me to update the test without needing to refresh the browser. So, in the proud tradition of bookmarklet design,
To use this with your own tests, simply change the base path of the script (
test-script.js in the example above) and paste a compressed version of the entire bookmarklet into your browser bar.