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Padhmanaban R
SSE & Blogger from Bengaluru, India. Strong expertise in React JS, React Native, JavaScript, LAMP Stack & Web Development.
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Category: React JS

The Empty String Trap: Why if (obj[key]) Fails in JavaScript

December 22, 2025 Padhmanaban

Checking object properties with if (obj[key]) fails when the value is an empty string “”. This post explains why and how to fix…

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Posted in: React JS

React JS Star Rating Application

February 23, 2021 Padhmanaban

Below code reference, will update the color of star based on user click. Use “onClick” handler to extend further, if…

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Posted in: React JS Filed under: reactjs, reactjs rating app

Dynamic Web Application Using React JS + PHP/MySQL (REST API)

February 10, 2021 Padhmanaban

Environment Setup: REACT: React is a library for building user interfaces, originally created by group of Facebook engineers. React as the V(View) in…

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Posted in: PHP/MySQL, React JS Filed under: reactjs, reactjs integration

React JS: Virtual DOM

April 6, 2020 Padhmanaban

A Virtual DOM is a collection of data structures (comprised of React elements) that mimics or mirrors the DOM that…

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Posted in: React JS Filed under: actualdom, heuristic diffing, javascript, react, react elements, reactjs, virtualdom

React JS: Core Features

April 3, 2020 Padhmanaban

React is a library for building user interfaces, originally created by group of Facebook engineers. Core Features: State, Props, Virtual…

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Posted in: React JS Filed under: javascript, react, react components, react features, react jsx, react library, react props, reactjs, virtualdom
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