I have these objects, which could be in an array, like in the example or a database: I want to subtract a total of { “points”: 5000 } as an example from the points values of these objects starting with the oldest points based on timestamp, keep in mind no payer’s points to go negative. then …
Tag: arrays
Merge multiple outputs from multiple functions into one array in Javascript?
Example I have these values, there is any way to put them together in a single array? This is one of the functions that make the results, they take their data from a database. Answer Your problem is you put var voti = [] in the function that will initialize a new array every time you call it. If you
How to convert array into JavaScript object
I have an array like this (which is similar to a JSON array) of length n: I would like to convert it into a nested Object like so: Essentially, the object is categorised according to the categorynumber and then optionnumber. (Please keep the format of “Phrase 4” and “Phrase 5” in view.…
Why is this 2D array filtering not working?
I have this 2D array and I’m trying to filter it, but it’s coming out unfiltered: Data: Filtering line: Expected result: WTHeck am I missing? Thank you! Answer Not smart enough to use those Array.map/filter function, but I guess this is what you want?
How can one access the related item from a 2nd array if one just has the randomly chosen item of the first array?
Basically, I have two arrays of related array items, where one item is/got randomly chosen. I want to print the related item of the 2nd array. Let’s say one has an array of job names, and it looks like this: Then one picks a random job name like that: Now one has another array which, with each item, fea…
Is there a way to pass keys into a JavaScript array where a a string might match multiple values of an object?
So, if I have only one key to match, then something like: would work beautifully. But is there a way to add multiple keys if the value matches? To give example of an object that might match the above string: What I want to do is return all of the “foo” keys (quay, yaya, and blah) based on the matc…
CSS Hover and Display Inline Block not working properly
Problem is when I hover, the overlay affects all the items, i would like it to do one at a time, not all at once and also I can’t get the display to show Inline-Block, items seem to be taking up the whole row, once it’s fixe i know i will have to adjust the figcaption because ideally that would
build array of json object while looping array of data
I have an array const A=[‘string1′,’string2′,’string3’]. I want to achieve an object that has the following form: This is what I’ve tried: But the result is an array filled with undefined values. Answer I do not understand why are you using JSON.stringify()? The simpl…
How to remove nulls from array and a linked array whilst preserving order
I know how to remove null values from a single array using filters: However, I’d also like to remove all those of an associated array whilst preserving the order of elements in both arrays. Say I have, where an element of x is associated with y, i.e., if y[94] is null (which should be removed), x[94] sh…
how to find certain key by its value into mixed objects array?
I need to find keys by all coincidence into its value/values example: find key by id=205, output: ‘first’, ‘second’ find key by id=208, output: ‘first’ Answer You can do something like this