#javascripttips — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #javascripttips, aggregated by home.social.
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Skip One, Sum the Rest: A Smart JavaScript Array Trick
When working with arrays in JavaScript, we often need to calculate the total sum of elements. But what if you want to exclude one specific index while summing? Let’s understand this with a simple and practical example. Problem Statement Given an array: const a = [1, 2, 3, 4]; If we exclude index 2, the value 3 should be ignored. 👉 So the result becomes: 1 + 2 + 4 = 7 Approach We need to: Loop through the array Skip the given index Add all other values Solution 1: Using for […]https://learnersstore.com/2026/04/28/skip-one-sum-the-rest-a-smart-javascript-array-trick/
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flatMap Can Filter AND Transform?!
flatMap is a SECRET WEAPON! Return empty array to REMOVE items, return array with value to KEEP. One pass does filter AND map together! This trick will make your code 10x cleaner!
#javascript #javascripttricks #flatmap #arrayfilter #arraytransformation #javascriptweird #javascriptquiz #codingchallenge #javascriptshorts #javascripttips #functionalprogramming #advancedjavascript
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New Date("WTF") – How well do you know JavaScript's Date class?
#HackerNews #JavaScript #Date #JavaScriptTips #WebDevelopment #Coding #WTF
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New Date("WTF") – How well do you know JavaScript's Date class?
#HackerNews #JavaScript #Date #JavaScriptTips #WebDevelopment #Coding #WTF
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New Date("WTF") – How well do you know JavaScript's Date class?
#HackerNews #JavaScript #Date #JavaScriptTips #WebDevelopment #Coding #WTF
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New Date("WTF") – How well do you know JavaScript's Date class?
#HackerNews #JavaScript #Date #JavaScriptTips #WebDevelopment #Coding #WTF
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New Date("WTF") – How well do you know JavaScript's Date class?
#HackerNews #JavaScript #Date #JavaScriptTips #WebDevelopment #Coding #WTF
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Error Handling in Node.js: Best Practices for Cleaner Code
Learn the best practices for handling errors effectively in Node.js to write cleaner, more reliable code. This guide covers common pitfalls, async error handling, and structured techniques to improve application stability.
#NodeJS
#ErrorHandling
#CleanCode
#BackendDevelopment
#JavaScriptTips
#NodeBestPractices
#AsyncProgramming
#CodeQuality
#WebDevelopment
#NodeJSTips -
Error Handling in Node.js: Best Practices for Cleaner Code
Learn the best practices for handling errors effectively in Node.js to write cleaner, more reliable code. This guide covers common pitfalls, async error handling, and structured techniques to improve application stability.
#NodeJS
#ErrorHandling
#CleanCode
#BackendDevelopment
#JavaScriptTips
#NodeBestPractices
#AsyncProgramming
#CodeQuality
#WebDevelopment
#NodeJSTips -
Function with parameter & Return Value
#Functions #WithParameters #CodingTutorial #LearnToCode
#ProgrammingBasics #CodeNewbie #PythonTutorial #JavaScriptTips
#TechEducation #DeveloperLife #YouTubeLearning #Shorts
#Edutainment #HowToCode #CodeWithMe