How many levels are in a Javascript array?
The user has children, children also have children as in the code example. There are a maximum of 5 such levels, but maybe less, 2, 3. My task is to iterate each level and return the number of children the…
Can we match IDs in Javascript arrays and create a new property if they match?
I want to compare movie[i].genre_ids with genres array and return an array of string to be pushed in each movie[i].genre_name as : genre_name:['','',''] const genres = [ { id: 28, name: 'Action' }, { id: 12, name: 'Adventure' }, {…
“What are common issues with using setInterval in Javascript for a function?”
I'm trying to draw visual representation of sorting algorithms. Bubble Sort is working fine, but Selection Sort don't care about how much time I put in the setInterval timer, he runs on the same speed no matter what (until I…
Javascript – Intersection of two arrays in multiple arrays
I'm searching for a way for extracting common values in at least two arrays in the list of arrays in JS. e.g. [["google", "amazon", "reddit"], ["telegram", "reddit", "discord"], ["firefox", "telegram", "chrome"]] to ["reddit", "telegram] The point is 1. the arrays…
Convert a delimited string to JSON object with set of keys and values from the string
I have a string like this var string = "1234|Tom|NYC|Student|Active" and I want to map to something like in typescript NodeJS API { "Id": 1234, "Name": "Tom", "City": "NYC", "Title": "Student", "Status": "Active", } Here the key comes from a…
Can I change classes dynamically in Javascript based on status?
I am using react and using map function . I want to use conditionally change class when my payment status will change I use if else statement but its give that status is not define . <table className="table display expandable-table">…
Javascript – Filter multiple array with multiple conditions
This is my Array: [ [ { id: 111, img_name: 'Image 1.jpg', img_url:'https://www.abc.png', show_img:true, publish:true } ], [], [ { id: 333, img_name: 'Image 3.jpg', img_url:'https://www.ghi.png', show_img:false, publish:false } ] ] UPDATE: Based on Mamun's answer this is the output…
Can Javascript loop through an array & compare each item to the prev. & next item?
Loop array and compare previous item and next item. My array: const array = [{id: 1,name: 'A'},{id: 2,name: 'B'},{id: 3,name: 'B'},{id: 4,name: 'B'},{id: 5,name: 'C'},{id: 6,name: 'D'},{id: 7,name: 'E'},{id: 8,name: 'E'},{id: 9,name: 'E'}] My Code: let result = [] array.forEach(function(item,…
Can PHP convert a 2D array w/ 3 cols to a hierarchical structure w/o assoc. keys?
I have data like this: Which can also be seen as this PHP array: $items = [ ['item1' => 'a', 'item2' => 'c', 'item3' => 'h'], ['item1' => 'a', 'item2' => 'c', 'item3' => 'i'], ['item1' => 'a', 'item2' =>…
How do I capitalize first letter of each sentence in JS?
How do i capitalize the first letter of each sentance in Javascript? (I am creating a tool that would convert first letter of each sentance to upparcase(Sentance Case) on click in reactjs) I want output like this, How do i…