I have difficulties finding a way to map an array of objects, to a new array that will need to have objects defined by specific fields and values plus I also need to add objects by a single day, will explain details further down and I cannot use for loops of any kind due code style restriction I have in
Tag: arrays
js: fill object with array elements using reduce()
trying to learn reduce() but can’t understand it well yet. Maybe someone from you could help me with my problem. I have an object with defined keys and an array. I would like to fill up the objects keys with the arrays values using reduce(). My sandbox LINK Till now I tried something like this: expected…
How to print a new array from existing array of object javascript
I need to create a new array of objects from the existing array on vuejs. example first array : expected result : I’ve tried forEach and looping the array, but seems can’t find the right function. Thank youu Answer This code should work However, if you want modified_array to be reactive to changes…
I am trying to solve a challenge from jshero.net
I am trying to solve a challenge from jshero.net Write a function add that adds an element to the end of an array. However, the element should only be added if it is not already in the array. Example: add([1, 2], 3) should return [1, 2, 3] and add([1, 2], 2) should return [1, 2]. why didn’t work this co…
for loop to multiply index 0 with 1, index 1 with 2, index 2 with 3
how could i generate a loop that iterates through a array, and its just multiplying the next index? example: array= [0,1,2,3,4,5] i know that i need to have a nested loop, but I cannot find the solution. Answer The problem with your current implementation is that you are looping over every index twice: once f…
Sort array of objects based on another array of objects key
I have 2 arrays of objects I need to sort array2 to match the same order of array1 based on the property name. In array2 there are 2 names properties equal with value B. These name B are together but i need the array to be in the exact order of array1. In array1 the first B is at index
Add or edit the typescript array based on the condition which is given
I have an array which looks like this I have a method to add to the array or to edit the existing array based on the input. This method has a new language which is given.I am adding a psuedocode.(Couldnt come up with anything better since I am very new to Typescript and Javascript). If a new person is given,
Is pushing an object to an array async operation?
I was doing one problem-solving program where I had to find all the pairs from an array that adds up to a target (classic two-sum program just with a little addition). This was my first approach: ** This should output: [{first: 8, second: 2},{first: 7, second: 3}] but instead it prints: [{first: 7, second: 3}…
How to distribute passengers to flights using Javascript
I’ve got a project I’m working on that deals with managing flights and passenger numbers. I’m currently stuck implementing the function below, any suggestions for how I could go about this would be excellent, what I currently have is below which I don’t think is correct, thanks again. …
Why doesn’t this function change the case of the string when it has a similar character like the first letter?
Can’t understand why the following function works for some strings an didn’t work for some which has a similar character like the first. Answer The function String.prototype.replace replaces the first occurrence when the first argument is a string. You can split the string change the index to uppe…