
Shopify Theme Constraints with Liquid
How Shopify Liquid theme constraints affect products, sections, apps, checkout, SEO, performance and the decision to stay theme‑based or go headless.
Articles from more than two decades of building, rebuilding, debugging, and leading web projects.

How Shopify Liquid theme constraints affect products, sections, apps, checkout, SEO, performance and the decision to stay theme‑based or go headless.

useRef in ReactUse useRef in React for DOM access, focus management, mutable values, previous values, integration work, and cases where refs should not replace state.

How Liquid templates shape e‑commerce front‑end work, including products, collections, snippets, theme constraints, content, and safe customisation.

Liquid is a small templating language with a lot of reach. This article explores its syntax, control flow, and why it shows up in so many CMS tools.

React Hooks, introduced in React 16.8, bring state and lifecycle features to functional components. Here, I explore how they work and why they matter.

Check rendered HTML for JavaScript pages by comparing source and DOM output across metadata, headings, links, schema, content, hydration, and crawlability.

Class and functional components are key to React development. In this article I explore differences, advantages, and when to use each in modern React apps.

Discover advanced responsive web design techniques with CSS Grid, `clamp()`, container queries, and JS enhancements for performance‑optimised, adaptive sites.

How client‑side rendering can affect search visibility, and what to check around content, links, metadata, routing, loading states, and fallbacks.

_app and Custom _document in Next.jsCustom `_app` and `_document` in Next.js explained clearly, including shared layout, global setup, server‑rendered HTML, and what each file is actually for.

The JavaScript event loop manages asynchronous tasks in a single‑threaded environment. I explore how it works with the call stack, task queue, and microtasks.

Create interactive interfaces with HTML, CSS and JavaScript, using semantic controls, accessible state, event handling, and progressive enhancement.

async/awaitUse async and await to simplify asynchronous JavaScript, with promise comparisons, error handling, readable control flow, and common pitfalls in real apps.

AbortControllerHow to prevent race conditions in JavaScript with `AbortController`, including stale search results, request cancellation, and browser support caveats.

Cross‑browser compatibility ensures a consistent user experience across different browsers. Best practices, CSS, and JS techniques, and testing strategies.

next/link for Client‑Side Navigation
Event delegation in JavaScript manages child element events via a single parent listener. Here, I explore how it works, its benefits, and practical use cases.

The React Context API explained with Provider and Consumer examples, prop drilling trade‑offs, shared app state, and when context is not the right answer.

JavaScript rendering and SEO checks for pages that rely on client‑side behaviour, including content, links, metadata, fallbacks, and rendered output.

Merging objects in JavaScript is straightforward once you know the tools. This guide covers Object.assign(), spread syntax, and overwrite behaviour.

Front‑end risks in Drupal template work, from render arrays and markup overrides to cache behaviour, accessibility, JavaScript, CSS drift, and editor output.