Looking for a very simple, elegant solution to count the frequency of different values in a javascript object. For example: I could probably loop over everything manually, but is there a simple and elegant solution, probably using reducers? Answer a reduce and a forEach. Object.entries to get the entries of each element of input array. Nullish coalescing operator(??) to shorten
Tag: count
Count matching letters once
I’m creating a kid’s learning tool that has a form which matches 4 letters to a word. I want to count the number of character matches in a word. But it counts duplicates of letters as 2 instead of 1. For example if the word is “loot”, and the user submits “flop”, the matching letters are 3 instead of 2,
How can I count in Firebase the collections in a document
I know how to count how many Documents are in a collection in Firebase but how does it work the other way around. I have several collections in a document and I need to find out how many. (In my example it would be 2) My Setup: I tried the following but it does not work: Does anybody know how
I want to make a this count object but i dont know how to solve it
I expect it to be { ask: 1, a: 3, bunch: 3, try: 1, get: 1 }; but it is wrong in various cases – how can I fix it? Thank you for your interest. But there was a problem with the other conditions. its other condition , just updated.. Answer So the idea basically is check if the object
How can I count items in Java Script array but only when items are the same next to each other?
I have an array for example like this {John, John, John, Maria, Peter, Peter, Maria, Anna, Anna, Maria, Maria, Peter} I need to get result like 1 -> 3 2 -> 1 3 -> 2 4 -> 1 5 -> 2 6 -> 2 7 -> 1 Answer I group the names, then I count them.