kietHT (@kietht) | Hashnode

Mastering Unit Testing with Jest in Modern JavaScript & React

Unit testing is one of those practices that separates “code that works today” from “code that survives tomorrow.” With tools like Jest and React Testing Library, writing reliable unit tests has become not only easier but essential in modern React/Nex...

Sep 11, 2025 · 4 min readhashnext.hashnode.dev

Making Tables Mobile-Friendly: 6 Approaches You Should Know

Tables often struggle on small screens. Here are six approaches to make them mobile-friendly, with pros, cons, and TailwindCSS code examples. 1. Scrollable Table (Horizontal Scrolling) <div class="overflow-x-auto"> <table class="min-w-full border"...

Sep 11, 2025 · 2 min readhashnext.hashnode.dev

A No‑Code Roadmap to Mastering Linked Lists (with Ruthless Dry Runs)

Promise: This guide teaches you to think in pointers before you ever touch code. You’ll use rigorous dry runs, invariants, and edge‑case checklists so that when you finally write code, it’s clean and bug‑resistant. Why dry run first? Linked lists a...

Aug 28, 2025 · 5 min readhashnext.hashnode.dev

LeetCode Practice Roadmap — Pattern-Base

High‑leverage way to level up fast: solve by patterns, review with spaced repetition, and mix in random problems. Why not go from #1 → #N? Cons: scattered knowledge, hard to spot patterns, slow retention, lots of near-duplicates. Pros: easy to st...

Aug 25, 2025 · 4 min readhashnext.hashnode.dev

Optimizing String Digit Handling with ASCII Codes in JavaScript

When parsing numbers from strings, many developers start with a straightforward approach: if (ch >= "0" && ch <= "9") { val = val * 10 + (ch.charCodeAt(0) - 48); } This works, but it’s not the most efficient. Each comparison involves string object...

Aug 25, 2025 · 2 min readhashnext.hashnode.dev

kietHT

About

Available for

kietHT's blogs

Mastering Unit Testing with Jest in Modern JavaScript & React

Making Tables Mobile-Friendly: 6 Approaches You Should Know

A No‑Code Roadmap to Mastering Linked Lists (with Ruthless Dry Runs)

LeetCode Practice Roadmap — Pattern-Base

Optimizing String Digit Handling with ASCII Codes in JavaScript

kietHT

About

Available for

kietHT's blogs

Mastering Unit Testing with Jest in Modern JavaScript & React

Making Tables Mobile-Friendly: 6 Approaches You Should Know

A No‑Code Roadmap to Mastering Linked Lists (with Ruthless Dry Runs)

LeetCode Practice Roadmap — Pattern-Base

Optimizing String Digit Handling with ASCII Codes in JavaScript

kietHT

About

Available for

kietHT's blogs

Mastering Unit Testing with Jest in Modern JavaScript & React

Making Tables Mobile-Friendly: 6 Approaches You Should Know

A No‑Code Roadmap to Mastering Linked Lists (with Ruthless Dry Runs)

LeetCode Practice Roadmap — Pattern-Base

Optimizing String Digit Handling with ASCII Codes in JavaScript

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kietHT

About

Available for

kietHT's blogs

Mastering Unit Testing with Jest in Modern JavaScript & React

Making Tables Mobile-Friendly: 6 Approaches You Should Know

A No‑Code Roadmap to Mastering Linked Lists (with Ruthless Dry Runs)

LeetCode Practice Roadmap — Pattern-Base

Optimizing String Digit Handling with ASCII Codes in JavaScript