i have a problem about when i trying mapping my data. I want a reach company name in supplier in products. How can i fix it? this is error message error this is data: https://northwind.vercel.app/api/products edit: @Tim Roberts found the solution. Only some elements have a supplier so other one’s dont h…
Tag: arrays
On clicking a button to add elements to an array in javascript, each time console.logging the array is returned with one less element
On, clicking a button to add an item to an array initialised as cart, the added item immediately appears in the cart array however, when I console.log the array, the item added does not get shown until after the next click. In that the first time the add button is clicked and the cart array console.logged; an…
Pass onClick to each image using map function
I am looking to pass an onClick function to each image element created using the map function. So that when a user clicks the thumbnail image it changes the main image to the thumbnail that was clicked. Right now however it seems like the onClick function is being called without even being clicked and the ima…
Concatinate different type arrays
suppose, array1 = [‘B’, ‘G’, ‘R’, ‘A’], array2 is Uint8Array, how to concatinate these two arrays ? I used var array3 = array1.concat(array2), but the result seems wrong , and array3.length is alwalys 5, regardless of content of array2. Answer You can do:
React: Separate array of timestamps into days
My API (NotesData) returns an array of objects where one of the key/value pairs is a PostgreSQL timestamp formatted like 2022-04-12T19:25:39.950747+00:00. I am creating a timeline of notes, where each object in the array is its own note with its own timestamp. So far, I have mapped over the array to create a …
Remove array objects contained in another array by value
I have to remove all the objects from array that contain the same id present in another array. This code works but I’m looking for a more elegant way to do it. I’ve tried also but doesn’t works. (it creates a new array, but at least one item with the same id remains in the new array). Is the…
Using maps over template literals
so I need to print a boolean value if the given string contains [[placeholder:var3]] but the var3 will be dynamically fed from an array as belwo: I tried using map around the template literals but it is throwing me an error also tried like above eg but it checks only first value of the array, so can someone p…
How do I find efficiently, the number of jumps it will take for an element to jump out of an array?
I am trying to write an efficient algorithm that will find the number of jumps it will take for a pawn to exit an array. Lets say we are given an array, for each element in the array if array[k] = n then array[k] is equal to array[k + n]; For example, we have this array [2,3,-1,1,3]. Initially the pawn
facing issue to store value in state and 3rd time state is not updating in react js
I am trying to get value from the radio button the problem is I can get the values but when I tried to store on my state it only updates 2 times after the 3rd time when I try to update the state it is not updating. Radio buttons code. I am trying to achieve output something like this My
Remove empty values from array of objects only if the value is empty in all objects
I’m trying to remove the empty strings in my array. This is my array: I would like to remove the empty string values ONLY if it’s empty in all objects. desired outcome: This is what I did but it removes EVERY empty string values: Thanks in advance , Answer If you don’t mind mutating the orig…