I have a JS array that looks like this: const arr = [ { i: "tooltip_119", children: [ { i: "text_345", children: [] }, { i: "wraper_375", children: [ { i: "grid_15", children: [] } ] } ] }, {…
I'm learning React. I know about recursion in plain JS functions. And recently I've found that this concept exists in React too. It's called recursive rendering. And you need some condition for it to work like in plain function recursion…
I want to make a new array from a JSON. The problem is I don't know the structure of the JSON I will be getting. It could be anything. But I know the JSON's key which will contain all the…
I'm building a Binary Search tree and I made a function to insert new values recursively, I tried to put its parameters by two wayas: 1- by reassign the parameter by assignment operator with the new value 2- by puting…
I am trying to call recursively another function "cityname()" with switch case#1 and I am getting "TypeError: cityname is not a function" the purpose is to give users option to enter the City name again and again if the user…
I'm looking at a functionality similar to p-props, p-all npm library but which recursively resolves promises const values = { a: () => Promise.resolve(1), b: [() => Promise.resolve(2)], c: { d: () => Promise.resolve(3), }, }; console.log(await resolve(values, { concurrency:…
The problem is that each child element is bound to each parent element, which is why everything is duplicated <?php $json = '[ {"id":3633,"name":"Mobile phones and accessories","left":1,"right":18,"level":1,"elements":0}, {"id":3638,"name":"Mobile phones","left":2,"right":3,"level":2,"elements":174}, {"id":21396,"name":"Tablets","left":19,"right":24,"level":1,"elements":0}, {"id":21450,"name":"Some Tablets","left":20,"right":21,"level":2,"elements":8} ]'; $data = json_decode($json, true); function buildTree($data, $level…
I have two tables. One with a parent child hierarchy and one with the details of some leaves somewhere in the paths. create table category ( category_id integer, category_name text, parent_category integer, level integer); insert into category values (1, 'cat1',…
Okay so I am trying to replicate JSON.stringify. Currently I am getting this error. Unfortunately this error is not very helpful because the message is cut short before it actually gets to what the problem is so I am quite…
For a simple object: const simpleObject = { "a": "aaa" , "b": "bbb" , }; I know how to get the key of a value: Object.keys(simpleObject).find(key => simpleObject[key] === "aaa"); However, if I have a complex object like this: const…