Before `querySelectorAll` there was Sizzle, which was the selector engine that was eventually spun out of jQuery itself: https://github.com/jquery/sizzle https

Before `querySelectorAll` there was Sizzle, which was the selector engine that was eventually spun out of jQuery itself: https://github.com/jquery/sizzle https://github.com/jquery/sizzle If you think that's wild, before there were dev tools in every browser, there was only Firebug (yes, there was only `alert` before that, we didn't even have `console.log`): https://getfirebug.com/ https://getfirebug.com/