Run it in console:
var script = document.createElement('script'); script.type = 'text/javascript'; script.src = 'html://path_to_script.js'; document.head.appendChild(script);
Run it in console:
var script = document.createElement('script'); script.type = 'text/javascript'; script.src = 'html://path_to_script.js'; document.head.appendChild(script);