I have an object that look like this: I want an array with pairs of EVERY key in the object with the value. For example: Everything Ok until that point. The problem is when a property is an array of objects. The output I want is the following: So it needs to check if the property is an array and
Tag: recursion
Why does it work? “multiply(arr, n) == multiply(arr, n – 1) * arr[n – 1]”
I just can’t understand the lesson “Replace loops using recursion” of freeCodeCamp. I’ll quote that part below; Recursion is the concept that a function can be expressed in terms of itself. To help understand this, start by thinking about the following task: multiply the first n elements of …
Recursive data in JSON object
} OK guys I have such JSON structure what I need is to: return all topics in array, in this example it will be: [“SERVICE_STATUS_PRESETS”, “AIRCRAFT_ACTIVATION”, “OUT_OF_SERVICE”, “PROMO_CODES_REQUESTS”, “BANNERS”, “DOCUMENTS”, “USE…
Return nested object with recursion – Javascript
I have an object with nested object: I need to return all key: value of list and I must use recursion. I have tried to push the nested object to the local variable in the function, but it fails in the second iteration because the names are different. Here is the function: Is there a way to solve it with
How to get the last children in a deeply nested array with objects
So let’s say I have a deeply nested array and I want to get the deepest nested children and I’m unable to think of a good way to implement it basically as long as the children property exists, it needs to dive inside it and it not I want to test if the name matches my search Answer hasOwnProperty(…
Convert array of flat objects to nested objects
I have the following array (that’s actually coming from a backend service): where Item is: In order to be compatible with a component that displays a tree (folder like) view, it needs to be transformed into: where NestedItem is: All I’ve tried so far is something like: But this only gets the first…
How to spy on a recursive function in JavaScript
Note: I’ve seen variations of this question asked in different ways and in reference to different testing tools. I thought it would useful to have the issue and solution clearly described. My tests are written using Sinon spies for readability and will run using Jest or Jasmine (and need only minor chan…
Javascript using Fetch and pagination, recursive?
Hello I’m new to Javascript and APIs. But I have an excersise where I should get Data from. https://swapi.co/api/planets/ The problem is that it doesn’t list all the planets at once so that URL only shows the first 10 entries while https://swapi.co/api/planets/?page=2 shows the next and so on. Thi…
How to sum digits recursively javascript
I’m learning the basics of JavaScript and am trying to write a recursive function to add together a group of integers. For example, the function argument would be 1234 and the result should be 10. Here’s what I have so far… But I get an infinite loop whenever I run this (my tab crashes). If …
vue.js – recursive components doesn’t get updated when using nested array from raw json
I am trying to create a tree with an add function using computed data. I used the tree-view example in vuejs official homepage and combined it with the computed function that I created but found no luck in implementing it. I’ve been trying to solve this for 4 days already and still no luck so I am here …