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Nalezeno "Javascript": 274

Immediately Executing setInterval with JavaScript

14.1.2022
Employing setInterval for condition polling has really been useful over the years. Whether polling on the client or server sides, being reactive to specific conditions helps to improve user experience. One task I recently needed to complete required that my setInterval immediately execute and then...

JavaScript S

27.12.2021
Replacing a substring of text within a larger string has always been misleading in JavaScript. I wrote Replace All Occurrences of a String in JavaScript years ago and it’s still one of my most read articles. The confusion lies in that replace only replaces the first occurrence of a substring...

navigator.clipboard API

13.12.2021
Reading from and writing to the user’s clipboard can be both a very useful and dangerous capability. Used correctly and it’s a huge convenience to the user; used dubiously and the user could suffer catastrophic consequences. Imagine a wrong account number or wallet address being copied...

The Invisible JavaScript Backdoor

8.12.2021
An interesting (scary) trick of an nearly undetectable exploit. Wolfgang Ettlinger: What if a backdoor literally cannot be seen and thus evades detection even from thorough code reviews? I’ll post the screenshot of the exploit from the post with the …

Array.prototype.at

8.11.2021
Working with arrays is an essential skill in any programming language, especially JavaScript, as we continue to rely on external data APIs. JavaScript has added methods like find and `findIndex recently, but one syntax I love from languages like Python is retrieving values by negative indexes. When...

Responsible JavaScript

2.11.2021
High five to Jeremy on the big release of Responsible JavaScript on A Book Apart. There is a lot of talk about how the proliferation of JavaScript has had a negative impact on the web, but now we have … The post Responsible JavaScript appeared first on CSS-Tricks. You can support CSS-Tricks...

Command Line trash

24.10.2021
One of the first commands you learn when experimenting with command line is rm, the utility for deleting files and directories. Deletion is a core computer UI operation but operating systems use a “Trash” paradigm, where files are stored before truly deleted. With the rm utility...

Links on React and JavaScript II

1.10.2021
How To Use The Vite Build Tool with React — Vite is hot, in part, because it’s based on esbuild and wickedly fast. It’s from Evan You of Vue fame, but it’s not a Vue-specific tool. Here, NARUHODO covers how … The post Links on React and JavaScript II appeared first...

How to Create a UUID in JavaScript

30.9.2021
The UUID identifier has been used in programming since the days a baby-faced David Walsh became a professional software engineer. My first exposure to UUIDs was via a ColdFusion app I inherited and … the less we say about that the better. In any event, I was recently surprised to see that...

Comparing Methods for Appending and Inserting With JavaScript

24.9.2021
Let’s say we want to add something to a webpage after the initial load. JavaScript gives us a variety of tools. Perhaps you’ve used some of them, like append, appendChild, insertAdjacentHTML, or innerHTML. The difficult thing … The post Comparing Methods for Appending...

AggregateError

17.9.2021
One of the big themes of the web these days is concurrency, which leads to accomplishing tasks asynchronously. In doing so, the possibility of multiple errors can occur. Instead of providing a generic error, optimally you’d provide a wealth of error information. TheAggregateError error lets...

jq for JSON

27.8.2021
I old enough to remember when we thought XML was going to change the programming world…then JSON saved us from that hell. Parsing and querying JSON data is fundamental task we’ve all coded for, but sometimes I just want to get some data locally with minimal fuss. I just learned of...

Introduction to the Solid JavaScript Library

24.8.2021
Solid is a reactive JavaScript library for creating user interfaces without a virtual DOM. It compiles templates down to real DOM nodes once and wraps updates in fine-grained reactions so that when state updates, only the related code runs. This … The post Introduction to the Solid...

React usePrevious Hook

23.8.2021
Hooks are essential for the functional component pattern in React. One frequent logic comparison with class components was comparing a previous prop value with a current prop value via lifecycle methods. So what’s an easy pattern for duplicating previous value comparisons in functional...

Choice Words about the Upcoming Deprecation of JavaScript Dialogs

9.8.2021
It might be the very first thing a lot of people learn in JavaScript: alert("Hello, World"); One day at CodePen, we woke up to a ton of customer support tickets about their Pens being broken, which ultimately boiled down to … The post Choice Words about the Upcoming Deprecation of JavaScript...

The State Of Web Workers In 2021

5.8.2021
You gotta appreciate the tenacity of Surma. He’s been advocating for Web Workers as a path forward to better-feeling websites for a lot of years now. He’s at it again making sure we all understand the landscape: […] regardless … The post The State Of Web Workers In 2021...

onInput Event

3.8.2021
Coding HTML forms has been painful my entire career. Form controls look different between operating systems and browsers, coding client side and server side validation is a nightmare, and inevitably you forget something somewhere along the line. Some behaviors don’t act the way you’d...

ES2021 Features

28.7.2021
Hemanth HM very succinctly shows off ES2021 features. Gosh it doesn’t feel like that long ago that all we could talk about is ES2015, and now that’s over a half-decade behind us. New things include “arbitrarily chuck underscores in numbers.” … The post ES2021 Features...

Slinkity

26.7.2021
Perhaps the #1 reason I love Astro is that it brings the JavaScript component authoring experience to the Static Site Generator world with zero JavaScript (except bits you very specifically opt-in to). That HTML-first approach is also why I like … The post Slinkity appeared first...

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