Is there a noscript type extension that allows you to see the start of the script contents? Or the parts that would be triggered first? Seems like a sensible o

Is there a noscript type extension that allows you to see the start of the script contents? Or the parts that would be triggered first? Seems like a sensible option might be to have some sort of button (address bar / extension button) that opens up a pane with the javascript as read-only so its easier to do a quick visual check for "funny business".