Questions tagged [ecmascript-6]
ECMAScript 6 reached feature complete status in 2014. The features vary widely from completely new objects and patterns to syntax changes to new methods on existing objects.
663
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News Website using react and next.js implementation
I'm looking for review and feedback on simple news website built using React, next.js, tailwind and nextui.
I'd love to get your feedback on file naming conventions, project structure, ways I could ...
- 191
2
votes
2
answers
79
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Merge three (or more) arrays based on specific index and create new array
I have three arrays in which first index is same, so I want to merge all three array into one array based on first index element
Input:
...
- 121
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2
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Detecting when a user stops typing
I wanted to detect when a user stops typing. I encountered this answer from SO (Not the selected answer, but the second one which seem to be better):
https://stackoverflow.com/a/5926782/17746636
But I ...
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1
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80
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Create and store the level data for a remake of Super Mario Bros game
I am trying to remake Super Mario Bros. in JavaScript and I am trying to figure out if there is a more efficient/shorter way to create and store the level data. I have created 1-1 and here's what the ...
4
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2
answers
144
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Abundant number implementation
I have implementted a simple JavaScript function to find the list of abundant numbers and print them on the screen.
an abundant number is a number for which the sum of its proper divisors is greater ...
- 143
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vote
1
answer
66
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Transform an array into object and set index for an unique key in javascript
I have a method that merges keys and indexes from an array into an object.
I'm stuck with ways to compress this method, and I don't know what I can do to make it simpler.
Goal
get an array of objects ...
- 155
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0
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78
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Display a list with (opened and closed) folders
I'm working on a script on Foobar that displays a list of playlists with some of these playlists that can be in a folder (that can be opened or closed). For example:
As you can see there may be 2 ...
4
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1
answer
2k
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Merge two dictionaries
This function merges two dictionaries, using the value from the later dictionary to resolve conflicts.
I have 5 tests that the program passes successfully:
...
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1
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131
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Test the log in functionality of a web page with incorrect credentials [closed]
I'm new to playwright, so I'm unsure if this is the correct or best way to go about testing. I basically want multiple tests on the same webpage. I've been able to successfully accomplish this using ...
- 3
2
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2
answers
255
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3
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69
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Filter the array of values from array of another value
I am doing the filter declaring a final array. it seems that the codes are much. it can be shortened?
code :
...
- 503
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1
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82
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Creating custom setTimout function using requestAnimationFrame loop
I created a function using requestAnimationFrame loop that works pretty much like the plain JS setTimeout function (except that ...
- 153
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vote
1
answer
741
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Re-order table columns in HTML dynamically with Javascript
I've a table in HTML looks like this:
Subjects
n1
n2
n3
subject1
10
0
0
subject2
0
5
20
...
0
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1
answer
56
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JS "Tabs" element
How can this be improved?
I'm looking particularly at the twice repeated tabButtons.forEach(button => {
...
- 1
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0
answers
236
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Promise to save an image to Firebase and obtain the resulting URL
I'm trying to write a promise that will return me the image URL value that I'm getting from firebase once It is saved to the firebase storage.
After some time I wrote the following code and it is ...
3
votes
1
answer
82
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Function that sorts nestedArray[][]'s
I'm fairly new to coding and am trying to learn more about best practices. I wanted to have an nestedArray of objectArrays, and I wanted to be able to sort the elements in each objectArray based on ...
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Taildwindcss dark mode toggle using javascript object
I'm learning javascript objects and ES6 and made this dark mode toggle for TailwindCSS. I'd like to know what can I improve with this code below
...
- 45
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4
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5k
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Generate an HTML table using JavaScript from an array of objects
I've an array of objects and I want to convert it into a visual table in HTML; so I did it last night, but I was tired. I don't think it is the right way of doing it, even though it's working and ...
1
vote
1
answer
212
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Chaining backend calls from VueJS method using Axios
This is the first ever bit of front-end code I have ever written, I have tried to adapt the existing call that is there to the backend using axios, so I check on of the response object value using the ...
- 497
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1
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121
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3
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1
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184
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Randomly set styles with JavaScript
I have created a function which randomly sets styles using CSS selectors. Right now it returns a random item from an array. The program also works with shorthand properties (such as ...
- 109
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votes
2
answers
2k
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Download entire localStorage as file
I would like to download the entire contents from localStorage to a json file (in a "clear" formatting).
I've tried this and it works perfectly. However, ...
- 109
2
votes
2
answers
458
views
Find a property of an object in array of objects with the min/max number in another property
So I have notes that have a lastEdit which is a timestamp in milliseconds and a unique id. I ...
- 129
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2
answers
104
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Javascript convert number string to Boolean
I'm making this control toggle between hide and show base on the value in this hidden value. I wanted to use a Boolean because I ...
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0
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83
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A prime iterator in JavaScript
This is an implementation of a Sieve of Eratosthenes as [Symbol.iterator] in JavaScript.
Comments welcome, my JS is a bit rusty. Making a class of this is mainly the reason to have fun with the ...
- 236
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1
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234
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1
vote
0
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31
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Embedded Timer Explorer
This is a toy design analysis utility meant to support decisions around
configuring a
timer
on a microcontroller. The initial configuration is an example meant to
partially represent the possible ...
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40
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Don't Upload Existing Images in React
I have successfully filtered images that are existing in React.
My problem is I wanted to improve or use the latest JavaScript on this particular code below where it filters the images.
How do I ...
- 133
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0
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581
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Google Chrome Service Worker Persistent Storage Caching System
Moving from Google Chrome Extensions’ Manifest V2 to Manifest V3, service workers replace background pages. Background pages can be configured to be persistent, but service workers can’t be persistent....
- 266
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1
answer
48
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Show selected person in another panel
I was playing with JavaScript in order to practice and wanted to make a list of people, which when clicked showed the person's details in another part of the screen.
Here's the code I used to ...
- 113
2
votes
2
answers
74
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group computed properties in vue component
I have the following vue component which all works fine
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- 631
1
vote
0
answers
65
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avoid reassigning variables in javascript [closed]
I have the following piece of code.
...
2
votes
1
answer
70
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Filter Options in React
I have several products. A product can have 1 or more images. In each image, we have content slot. I don't want duplication per content slot in a product.
My code works fine. I'm just wondering what ...
- 133
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votes
5
answers
2k
views
Extracting a part of a URL path
I have a string like the one below from which I am extracting the tariff name.
...
- 63
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votes
2
answers
78
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Processing list of users- filtering out from refused list
The code below takes a list of users and displays two lists
Refused users
Admitted users
Sample output:
Refuse: Phil, Lola.
Admit: Chris, Anne, Colin, Terri, Sam, Kay, Bruce.
Any feedback is ...
- 602
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votes
2
answers
545
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Tic Tac Toe in object oriented JavaScript
I've been working on a course assignment for 'The Odin Project' and was hoping to get a review of my code.
As per the help guide, the code is fully functional.
The criteria for this was pretty ...
- 35
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votes
2
answers
318
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PHP blogging application with AJAX loading
I have been working on an online newspaper/blogging application with CodeIgniter 3.1.8 and Twitter Bootstrap 4.
The latest feature added is lazy loading of posts.
From the Static_model (...
- 525
3
votes
2
answers
181
views
Check for max value in stack
Got this problem in a coding interview -
Get the max value of a stack in O(1).
The stack contains numbers only.
Please review my solution.
...
- 39
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1
answer
72
views
1
vote
1
answer
230
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Vue and JSONPlaceholder application
I have put together this small application that uses the JSONPlaceholder API and Vue.js.
The application crosses users and posts and displays the posts by user (author):
...
- 525
2
votes
1
answer
190
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Learning asynchronous caching by implementing one
After implementing a serial CLOCK second-chance cache in C++ without having enough rope to shoot myself in the foot, decided to dive into Javascript through NodeJs and write an asynchronous one. I ...
1
vote
2
answers
140
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Javascript - On mouseup check if any of the parents has/includes specific id
On my page I have a mouseup eventlistener on document. I want to be able catch if the clicked elements has a specific ...
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votes
1
answer
182
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How could this indentation-based lexer be simplified?
I finally got this lexer working, full implementation here. How can the lex function be simplified? The goal is to take a tree of indentation-based text, and ...
- 351
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2
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103
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2
votes
2
answers
91
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JS script fetching GitHub API for personal website
I've built a very simple personal website, everything is in a single file because it is very straightforward, but I think the JS script could be better structured. All it does is fetch some repos from ...
- 403
1
vote
1
answer
148
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list of games to open radar match in iframe on for drop-down controls
In general my page is slow and has several points in the code that I believe can be improved, even in relation to the structure used. Anyway, the biggest problem is:
The page I'm creating is very ...
- 205
3
votes
2
answers
539
views
Single user Electron application allowing basic CRUD operation on a table (stored in JSON)
I am completely new to JavaScript and I will be grateful for your comments on my Electron app (electron is a JS framework allowing to create of desktop apps).
I needed to create an application that ...
- 143
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vote
1
answer
3k
views
Recursively access deeply nested object
Problem Statement
I need to access a deeply nested object. I could've used a 3rd party util such as Lodash but insisted myself on writing a Vanilla JS solution with a recursive strategy.
Code
Can this ...
- 161
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2
answers
598
views
1
vote
3
answers
155
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Run-length coder
I have this code, which counts only adjacent letters in a string and returns the count of each letter.
...
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