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How to build a Set of unique Arrays?

I want to add many arrays to a Javascript set, and ensure that only unique arrays are added to the set. However, when I try adding the same array multiple times, it is always added instead of rejected. The .has() method always returns false as well. How do I fix this? Answer I’d use a Map instead, index…

CSS issue with changing colors on hover / clicked

EDIT – I added a snippet but it gives an error when I click on one of the divs that I don’t get when running this locally on my machine. When I run it locally the div border does turn white. It just stays white and won’t turn back red unless I specifically turn it back to red by its

Grab query string value from URL using Javascript

I want to visit https://example.com/?GCLID=test123 and store whatever is in GCLID in a variable. How do I do this? The following keeps returning null Answer You have to take the part after ‘?’ in new URLSearchParams, see below example for same, i.e you will pass window.location.search like this

Compare and add property to array of object

I have two arrays of objects (Obj1 and Obj2). The difference is that Obj2 objects have an extra property called fn. I want to compare both arrays and if an object in Obj1 has fn in Obj2 for the same datakey then want to add fn in Obj1 also (the datakey is unique). I don’t want to change the order

unify objects from array to a bigger object

My english is not really good and it is hard to explain what I want in the title, maybe this will help: I have some small data objects which I get from answers of a form. Something like this: I pushed them into an array, so I get this: I need to unify this so the objects with same key