I have this nested array which I am trying to sum the number in the last arrays individually so it should return 400 for each array also trying to get the average of the total, for example if it is 400 then it is 100%, if 399 it will be 99.99%, the average needs to be from 100% and dynamic
Tag: arrays
Divide array to group indexes
I have a problem with the following logic in Javascript. I have the following array, that have dynamic number of indexes, in this example I write one array with 2 indexes. [[S,Blue],[M,Red],[L,Yellow] I want to have this structure: { 0: [S,M,L], 1: [Blue,Red,Yellow] } The numbers are the indexes of first group of array, what can I do? I tried
Build a function that returns events that are currently happening in the present within a selected time frame in NodeJs
I am fairly new in NodeJS, and I am trying to build an event management system where the user can see events that are happening now, upcoming events and past events. I have built a model called events which has attributes startDate and endDate which a user selects upon creation of an event. I need to list events that are
How can I remove duplicate strings from an array of strings but only if they start with the same 5 characters in JS?
I have a nodelist: Every “a” contains a string In the example the list is like that: I need to remove for example the the third element because it starts with the same 5 characters of the second element even though they end differently. Everytime I encounter a new element I need to check if there’s another element in the
Searching Objects for Values and placing into new array
I’m attempting to search each of the objects listed below from my dataset to see if they contain a value and if they do have that value to add the entire object into a new array. Example: Search List of Objects for Data “Continuous”, if that data exists (Which it does in Doormerica and Hager) then take the entire object
Where does filter method in js store new array If I am not assigning any variable to it?
Is the filter method returning the whole array or each item one by one? Here I removed duplicates in Function using filter method. My question is I know filter method creates new array but where does it store that array? Answer The filter method returns a whole new array once it’s completed. Primitive values (as you’ve got here) are cloned,
Filtering boolean and returning parent title
I need to chains.fitler(x=>x.inStock) bool statement then return the specific key, i also want to add conditions to return all if none are true. EX: key1, key5 | inStock:true return key1,key5 Answer Not 100% sure how you want the input and output to be but you should get a bit closer with this implementation:
how to calculate zero values in array between two valid numbers?
I have an array of numbers with some 0 values. I want to fill 0 with the linear difference between two valid values. let arr = [10,0,0,16,17,0,23] I am using the below code to calculate the linear difference between the two data points if they have zero between them like 10 and 16 have two indexes with 0, if need
Multiple buttons with the same class name but only the first one works
I’m fairly new to JS and I currently working on the front-end of a very basic ecommerce page as a personal project. Here’s my question, all the “items” on the page are exact the same aside from their name. When I click on “buy”, I’d like to send the name of the respective item to the cart. However every time
How to check possible all combinations of elements in an array that fullfil certain conditions?
I am currently writing (as an exercise) a simple political calculator that checks depending on how many seats each party has, possible majorities in the parliament. I have created an object that holds the name as key and the seats as value, like so: I then use Object(entries) to move the data into an array: My question is, how can