All Questions
9,398 questions
2
votes
2
answers
72
views
French Republican Calendar Converter (Romme Rule)
This is a French Republican Calendar / Gregorian Calendar converter I've written; it returns an accurate date for all the dates I've tested (mostly dates in the present age, although it also lines up ...
- 21
2
votes
2
answers
224
views
Permissions system in MERN app
I am working on a MERN stack app that is a CRM with a couple of modules. Now when the user sends x request to the server to do a supposed action (such as delete something), the server first checks if ...
6
votes
1
answer
1k
views
Username Validation RegExp
Working through the freeCodeCamp JavaScript curriculum and I found this RegExp task surprisingly tricky (maybe I just don't use RegExp very much).
The parameters are:
Usernames can only use alpha-...
3
votes
2
answers
333
views
Intersection of 2D vector equation straight lines
I know the vectors that describe two perpendicular lines, $$\mathbf{a} + \lambda\mathbf{d}$$ and $$\mathbf{b} + \mu\mathbf{d'}$$
I've written a JavaScript function to get the coordinates of the point ...
user98809
1
vote
1
answer
3k
views
Process a binary file by chunk using a read stream in nodejs
I want to process a file chunk by chunk to prevent memory exhaustion. I need to consume the file using a read stream. When trying it, this implementation seems to work fine.
I am asking your expert ...
- 145
5
votes
1
answer
104
views
Secure password generator form
With the demise of passwordsgenerator.net I wrote my own generator;
Please review with an eye on correctness and maintainability;
...
- 33.8k
5
votes
3
answers
2k
views
Heartbeats per minute in vanilla HTML JS
Attached is a fun little snippet demonstrating a button to be clicked along with your heartbeat and see how many beats per minute you're at. This is a mwe of the concept, any feedback is appreciated.
...
- 287
1
vote
0
answers
36
views
Refactor Node.js Logging Library for Improved Readability
I have a Node.js logging library that applies ANSI styling for text formatting. Currently, the code contains some redundancy and could be refactored for better readability. I'm particularly interested ...
89
votes
6
answers
7k
views
You hate h̶a̶t̶s̶ reputation? Click here to get rid of it
Soo... I recently read a meta-post about the inherent problems of reputation. It listed some things like:
Confirmation bias.
Demotivating for low-rep users.
Hubris and elitism of high-rep users over ...
- 25.3k
1
vote
1
answer
72
views
String represents a road. One character travels on the road obeying the stops - Code challenge (advent.js day 5)
This is my code to solve the 5th Adventjs challenge. In that link you can read the instructions.
How can I improve it? It's a bit messy... and I'm repeating some part of the code.
All must be in just ...
2
votes
2
answers
195
views
First app with JS in OOP
I've already started to creating apps in JS with OOP.
I made simple TicTacToe Game in OOP and I want to ask you to review my code and point out everything that I can change about OOP. What is bad ...
- 21
1
vote
1
answer
352
views
Movies App with Vue 3 and TypeScript
I have made a Movies App with Vue 3, TypeScript and The Movie Database (TMDB) API. For aesthetics, I rely on Bootstrap 5.
In src\App.vue I have:
...
- 525
4
votes
2
answers
133
views
Filter an object array based on certain conditions
How can I rewrite this in a cleaner way?
I have this function that takes a list of contacts of different types (are being called ...
- 237
0
votes
0
answers
34
views
Bidirectional typing effect
Implementation supporting both typing directions from left to right and from right to left. It also supports alternating typing directions and configurable letter spacing. With monospace font the ...
user279935
1
vote
1
answer
116
views
Personal Computer Web-surfing Digital Well being user script
I have written the following JavaScript small script to do three things in a web browser:
Block all or most News websites (send your browser to google.com instead)
Block automatic playing of any ...
- 19
7
votes
4
answers
6k
views
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 ...
- 553
2
votes
1
answer
133
views
Form Validation Code Optimization in HTML and JavaScript"
I've been working on a simple form validation code in JavaScript coupled with an HTML form. The form asks for user's basic information, including name, email, country, gender, and skills. There's a ...
- 553
0
votes
0
answers
38
views
Colorproof dust effect (second thought)
The colorproof dust effect could be enhanced with positionproof feature getting the position of the dusted element (dust container) from its getBoundingClientRect ...
user279850
2
votes
1
answer
74
views
Reorganice (and style) form's output in HTML using JQuery: how to do it better?
To clarify: The code in "What I achieved" is working. I'm looking for suggestions so I can improve.
I'm quite new with JQuery (and javascript) and I've been learning while styling a forum. ...
- 21
2
votes
1
answer
109
views
JavaScript implementation of PHP's array_intersect_key()
I've written a JavaScript function to imitate PHP's array_intersect_key() function for objects. PHP uses arrays as both arrays and objects but JavaScript treats arrays and objects differently. I'm ...
- 249
2
votes
2
answers
73
views
Calculating the sum of all k-sized sub-arrays in an array using sliding window algorithm
I need to calculate the sum of all k-sized sub-arrays in an array using sliding window algorithm. Is that a valid sliding window algorithm? If not, why?
...
- 21
4
votes
1
answer
116
views
Legend of Zelda: Breath of the Wild armor upgrade materials tracker
There are plenty of these online already but none of them quite fit what I wanted. I've been meaning to learn some more front-end stuff so I decided to make one myself. I know some JavaScript but ...
- 713
1
vote
2
answers
145
views
Receiving a daily reward
I'm doing a daily reward system on my site.
Users can pick up the reward only once a day. The next reward can be picked up the next day, also, only once.
When a user visits the site to pick up a daily ...
- 13
21
votes
5
answers
7k
views
Count all vowels in string
For a homework assignment, I was asked to complete this CodeStepByStep problem. It's coded correctly and gave me a right answer. I'm just wondering if there's an easier way to solve this problem ...
- 10.4k
1
vote
0
answers
78
views
Variable button increment picked from an input:range in React 18
I'm a newbye in React. I created some simple Components to practice. For now, I'm using class Component (I want learn either class COmponent or function COmponent).
I would know if I projected ...
- 111
1
vote
2
answers
581
views
Split the Bill and calculate the Tip
I have created a Bill Splitter page that asks for the total bill amount, tip percentage, and the number of people. Then it displays the tip and the total amount (including the tip) each person has to ...
- 141
3
votes
2
answers
329
views
Count matching pairs (modular equality)
Problem
Given an array of natural numbers a. Find the number of such pairs of elements (a_i, a_j), where ...
- 189
4
votes
1
answer
167
views
Array Implementation In JavaScript
Review
I have written my own implementation of Array in JavaScript with the basic functionalities. Can anyone please review this code and point out the mistakes/how to make the implementation better?
...
- 283
0
votes
1
answer
79
views
Handling pure in browser HTTP request in Service Worker fetch event
I was suggested by @Bergi on StackOverflow that Async Promise constructors are any pattern.
The argument behind this is that async Promise swallows the errors. In my case, I have try..catch so I'm not ...
- 238
11
votes
4
answers
4k
views
Logs 'Fizz' for multiples of three, 'Buzz', for multiples of 5, and 'Fizz Buzz' for multiples of 3 & 5
I'm new to coding and have been directed here from Stack Overflow. As I'm new to coding, I'm not entirely sure if my program works completely, but I think it does. I'm looking for suggestions on how ...
- 119
98
votes
9
answers
182k
views
Generating all combinations of an array
I'm generating all combinations of an array, so for instance, ["a", "b", "c", "d"] will generate:
...
- 1,307
1
vote
2
answers
216
views
Function that formats number of seconds to total time (days, hours, minutes and seconds)
I need to format total number of seconds to total time in the following format: Days:Hours:Minutes:Seconds.
This is what I did:
...
- 451
1
vote
1
answer
66
views
Observer design pattern: value observer and variable observer implementation
Observer implementation that leverages both behaviours observing a variable and observing for a value. Supports subscribing and withdrawing observers.
...
user275896
1
vote
1
answer
77
views
Javascript CLI to boot iOS simulators, install project, extract data, and merge into JSON
I'm a DIY "dev" - so I really create things that I need or think they'll end up helping others.
I wrote this Swift Package so the iOS community could get device bezel radius' to help with UI ...
- 171
2
votes
0
answers
120
views
Create a Penrose tiling
I programmed this type of Penrose Tilings in javascript and the algorithm is 'simple':
The cyan pentagon always have to draw the yellow losenge and the grey pentagon almost always have to draw two red ...
- 73
4
votes
3
answers
2k
views
Increment counter on button click
I've written a simple JavaScript function to increment a counter after clicking on a button.
Here's my code:
...
- 171
1
vote
2
answers
78
views
Changing every link on page, in fastest way possible
I have created a script (mediawiki gadget), which iterates over every redlink in a rendered wiki-page (that is, over every href with class new, signifying an ...
- 11
4
votes
1
answer
192
views
Hangman Game in HTML + CSS + JS
I recently developed a hangman game with HTML, CSS and JavaScript and I would like to get your feedback and tips to improve it. The goal of the game is to guess a secret word before 6 incorrect ...
0
votes
1
answer
44
views
js template engine
I am building a template engine for js and I need some help refactoring the code for fast and more efficient performance. If you can help modify or suggest some updates I'll be grateful.
...
2
votes
2
answers
919
views
Clone Div and change input control
I am using keypress to get all the events of a input control. Once the user hits the enter button after I am then clone a div and update the ids. One project I am having is that I only want to do this ...
- 353
4
votes
1
answer
52
views
JavaScript search algorithm to find a town in a particular state
I built a function in JavaScript which executes a search algorithm to find a town in a particular state. The dataset, referenced by the variable townsAndStates is ...
- 467
1
vote
1
answer
254
views
Calorie Calculator
I have developed a calorie-tracker webpage and would appreciate some feedback on it. I'm particularly interested in optimizing performance, improving code readability, and ensuring best practices are ...
- 141
3
votes
1
answer
271
views
Snake game using Canvas API
Edit 2: For anyone interested, you can play the game at buggysnake.com
Edit 1: I have typed up the code for making the body of the snake move. It's not perfect and there are small problems I need to ...
- 133
1
vote
1
answer
415
views
Loading Filtering and Displaying Top 10 Countries Data
I've created a small project that fetches data from a 'countries' API and works around with it to display the 'top 10 most populated countries' & 'top 10 most spoken languages'.
I kindly wish if ...
- 51
3
votes
1
answer
981
views
Adding classes from a given array or an object
I want to add classes to elements based on a source array or object.
For example, it can be:
...
- 451
3
votes
1
answer
155
views
JavaScript seedable Math.random
I made an implementation of xoshiro256** in JavaScript, using BigInts. It's designed to mimic Math.random. Any feedback on the code quality?
...
- 101
3
votes
1
answer
289
views
JSON comparison function
I've written a comparison function between two json values. I'd like to know if it can be improved at all in any way. Thanks again for the help.
...
- 429
4
votes
2
answers
190
views
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 ...
4
votes
1
answer
3k
views
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:
...
- 41
2
votes
0
answers
82
views
Javascript basic search engine recipes
I have made a search engine for recipes. Requirements for this JS Project are as follow:
Create a function called searchRecipes that takes all recipes and an ...
- 21