2020-12-19 Chrome Console $
jQuery ロードしていないページでもChrome Consoleで $ が使える
Console Utilities API Reference | Chrome DevTools | Google Developers
$(selector, [startNode]) $(selector) returns the reference to the first DOM element with the specified CSS selector. When called with one argument, this function is an alias for the document.querySelector() function.
\((selector, [startNode])\)(selector) returns an array of elements that match the given CSS selector. This command is equivalent to calling document.querySelectorAll().
他にもいっぱい便利なAPIがあるので覚えておきたいですね。