Following is my array and I want to have objects nested like this as output : Please help me with a recursive function to do this in node.js. Following is the recursive function is what I have tried: Please help me to solve this. I am a newbie in this. Answer Renaming some variables helped me solve this. getNestedChildren returns
Tag: recursion
How to recursively process a JSON data and return the processed JSON from a function?
I have below JSON data with nested objects. I want to delete the ‘id’ from this structure and return the changed JSON from the function. I have tried to do it recursively below way but not able to return the changed JSON. How can I return the rest of the JSON from the processJSON() and hold that in a variable
React treeview from JSON array
I am making a treeview from JSON using react. So far I have made a collapsible tree using this example data: But this is one object. I want to get JSON array of objects as input and generate treeview from that but I am unable to understand where to change the code. Here’s my render function: How can I change
Javascript – traversing through object and updating property
I’m hoping someone can point me in the right direction. I have a JavaScript object like the following … My goal is to iterate through each category/subcategory and set the value of ‘isExpandable’ depending on my logic. Can some advise how I can iterate through through each subcategory of the object, baring in mind that a subcategory and also have
How to create a binary search with recursion
I am attempting to write a “binary search” which I’ve never done before. The code below does not work when the value searched for is 6 or 2 and I want to know what I am doing wrong and how to remedy it. EDIT To explain what it is suppose to do (based on my understanding) a binary search requires
How to retrieve all posts of a user via Facebook Graph API using promises and recursion?
I am currently developing a web app which uses the Facebook Graph API. What I would like to achieve is to get all posts of a user. However, this is not that easy since I have to paginate the results. At the moment I am struggeling with promises. What I try to achieve is to fill an array with the
How do I recursively use Array.prototype.find() while returning a single object?
The bigger problem I am trying to solve is, given this data: I want to make a function findById(data, id) that returns { id: id }. For example, findById(data, 8) should return { id: 8 }, and findById(data, 4) should return { id: 4, children: […] }. To implement this, I used Array.prototype.find recursively, but ran into trouble when the
flatten an array recursively
I tried to implement an array flatten function recursively. Here is the code: But I don’t know why the result is not correct. Please help me explain it. Answer The concat() method returns a new array comprised of the array on which it is called joined with the array(s) and/or value(s) provided as arguments. flatArr.concat(…) doesn’t change flatArr… you need
Explain how recursion works in an algorithm to determine depth of binary tree?
I am new to data structures in JavaScript and am trying to learn Binary Search Trees. I was following along with a blog post and was able to get a working solution to the problem of finding the max depth in a BST, but it’s unclear to me how the recursion is working and how the +1 gets added on
Nested Tree structure object trying to extract and get information Json object
I would like to know the correct way to create a nested Json tree Structure object in javascript. data structure containing objects and arrays. How can I extract the information, i.e. access a specific or multiple values (or id)? I have a very deep nested tree structure Json and I am given an object that can exist at any depth.