Coding tips
Build an Offline Habit Tracker With localStorage
A small offline habit tracker in plain HTML and JavaScript: habits saved as JSON in localStorage, streaks from local dates, a 7-day row and a JSON backup.
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Beginners
Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.
#Beginners
#Security
#PHP
#Forms
#Next.js
#TypeScript
#CSS
#Gemini API
#HTML
#JavaScript
#Layout
#localStorage
#Python
#Zod
#Zustand
#Accessibility
#Arrays
#Async
#Canvas API
#CSS Grid
#Email
#Flexbox
#List comprehension
#MySQL
Coding tips
JavaScript Async/Await Tutorial for Beginners
A beginner async/await tutorial: async functions, try/catch, fetch with response.ok, Promise.all for parallel work, retries, and the forEach mistake to avoid.
Coding tips
JavaScript map, filter and reduce Explained
JavaScript map, filter and reduce explained with practical examples: transform, keep and combine array items, chain them, and avoid the classic mistakes.
Coding tips
PHP Form Validation and Sanitization Guide
How to validate and sanitize PHP form input: trim, filter_var, mb_strlen and allow-lists, then escape output with htmlspecialchars, add CSRF and redirect.
Coding tips
Python List Comprehension Examples Explained
Python list comprehension examples I actually use: basic syntax, filtering with if, if/else, nested loops, dict and set comprehensions, and common mistakes.
Coding tips
Python f-Strings: Formatting Examples
Python f-string formatting examples for decimals, thousands separators, percentages, alignment, dates and = debugging, plus what's new in Python 3.12 and 3.14.
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