JavaScript being disabled - Google was already sending analytics pings when search result links were clicked on, using JS.
<a ping=""> works without JS in Chrome and Safari (but not Firefox) https://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorE...
JavaScript is required to use Google search at all, no?
It doesn't work without JS though.
alt Hacker News
<a ping=""> works without JS in Chrome and Safari (but not Firefox) https://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorE...