Today I Learned - Rocky Kev

TIL Check if a given element is in focus

POSTED ON:

TAGS: javascript

The key ingredient is activeElement

const elementIsInFocus = el => (el === document.activeElement);

elementIsInFocus(anyElement)// returns true if in focus, false if not in focus

Via
21 Useful JS snippets

Related TILs

Tagged: javascript

TIL what is npm Script

Despite their high usage they are not particularly well optimized and add about 400ms of overhead. In this article we were able to bring that down to ~22ms.

TIL fancy methods to transform Javascript Objects

You can use Object.entries(), Object.keys(), Object.fromEntries()...

TIL how to hide your JS code

ONE THING TO NOTE: Encrypting a script is stronger than obfuscation, both methods are still not adequate to protect secret content. Honestly, I don't think it's worth it on a production site, and instead just go with pure server-side if you want security. But it's fascinating.