To some degree, it's absolutely the case that JS frameworks of the era have shaped what browsers have done in the late-00s. I can't remember the detail of docu

To some degree, it's absolutely the case that JS frameworks of the era have shaped what browsers have done in the late-00s. I can't remember the detail of document.querySelectorAll; it was first proposed around the time jQuery was originally released. element.querySelector I think was largely inspired by jQuery's usage of it (in part to make it easier to run more of jQuery's selectors natively!).