React's Virtual DOM vs. the Real DOM
React's virtual DOM optimises performance by reducing updates to the real DOM. Here, I explain how it works, how it compares, and why it improves efficiency.
Articles
JSX
Most commonly used with React, JSX is a syntax extension for JavaScript which is used to describe what the UI of a website or application should look like. It allows us to develop markup in JavaScript by following a similar structure to HTML.
Below you will find a subset of articles from my blog specifically about JSX. This is an area that I have worked with for many years, and have managed to write about quite a few times. There are eight collected together for you below.
React's Virtual DOM vs. the Real DOM. 
Commenting in Front‑End Languages. Commenting in Front‑End Languages
There are essentially two different types of commenting in development languages: single‑line, and multi‑line. Here, we discuss these, and how to use them.
How to Choose a React Developer. How to Choose a React Developer
Hiring a React developer is about more than matching keywords. This guide looks at fundamentals, judgement, and what good front‑end signals look like.
Rendering Contentful Rich Code Snippets in Gatsby. Rendering Contentful Rich Code Snippets in Gatsby
Contentful rich text and Gatsby work well together until code snippets enter the picture. This guide shows how to render inline and block code cleanly.
Optimising gatsby‑image Even Further. Optimising
gatsby‑imageEven FurtherOptimise gatsby‑image further with sensible maxWidth, quality settings, native lazy loading, GraphQL image data, and avoiding oversized assets in Gatsby.
Use Greater‑Than and Less‑Than Symbols in JSX. Use Greater‑Than and Less‑Than Symbols in JSX
Render greater‑than and less‑than symbols in JSX safely, using strings or HTML entities while avoiding parser confusion and awkward React output.
Commenting in JSX. Commenting in JSX
Comment in JSX without breaking React parsing, including curly‑brace block comments, why HTML comments fail, and gotchas around rendered output clearly.
Leveraging JavaScript Frameworks for Efficient Development. Leveraging JavaScript Frameworks for Efficient Development
JavaScript frameworks streamline development with reusable components, state management, and optimised rendering. Here, I compare React, Vue.js, and Angular.