The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →State.js is a small, author-described approach to interactive interfaces in which the state lives in HTML attributes and CSS handles the visual response. The title’s phrase “only HTML + CSS” describes how the author wants you to write the interface, not a claim that no JavaScript runs underneath. The walkthrough behind this article is a beginner tutorial from the project’s author, listed with a June 3 publication date; the listing does not show a year, so treat its timing as unconfirmed.
How the pattern works
The model has three parts: markup that carries the state, a layer that connects changes to that state, and CSS that renders the result. In the author’s examples, the sequence runs in four steps.
- Declare the initial value in markup. A value is written into a
data-*attribute on an element, such asdata-count="0". - Expose the value to CSS. State.js reads the attribute and makes it available as a corresponding CSS custom property, so a stylesheet can use the value without any script of its own.
- Change the value declaratively. A trigger attribute on an element updates the stored value when something happens. The examples use this for clicks, form input and timed updates.
- Let CSS and text respond. Styles that depend on the custom property change automatically, and the examples also update text content and CSS classes from the same state.
The useful mental shift is that the page’s current state is visible in the HTML itself. You can read the counter’s value in the markup, and you can see which styles depend on it by reading the stylesheet.
What the examples cover
The tutorial walks through five patterns. Each one is a demonstration of the intended pattern, not proof that every interface can be built this way.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- HTML CSS Design and Build Web Sites
- Comes with secure packaging
- It can be a gift option
- Counter: a numeric value stored in a data attribute and incremented through a declarative trigger.
- Conditional classes: an element’s class changes depending on the state value.
- Interval-driven values: a value that changes over time without a separate event handler.
- Range-input binding: a slider’s position feeds a state value that drives the display.
- Reusable template instances: an HTML template is cloned with
data-state-include, so the same component can appear several times with different configured values.
What “only HTML + CSS” means in practice
The author’s related ecosystem overview describes JavaScript as the runtime that feeds browser signals to the HTML and CSS. The accurate reading is therefore that the authoring surface is markup and stylesheets, while the library that connects them is still script. The table below separates the design choices the pattern changes from the ones it leaves alone. These are explanatory comparisons, not measured results.
| Question | State.js pattern (as described by the author) | Conventional component-state approach |
|---|---|---|
| Where state is declared | In data-* attributes on the HTML |
In JavaScript objects, stores or framework component state |
| How updates are expressed | Declarative trigger attributes | Imperative handlers or framework bindings |
| How presentation reacts | CSS custom properties, selectors and classes | A rendering layer that re-renders or patches the DOM |
| Best suited to | Small interactive widgets and declarative UI experiments | Applications with substantial logic, data flow and shared state |
What is and is not established
The evidence available for this title is the author’s own tutorial and adjacent writing. That is enough to describe how the pattern is meant to work, but not enough to make independent claims about it.
- No independent benchmark, production case study or third-party evaluation was found. Claims about speed, overhead or scaling should be treated as unmeasured.
- The current release, license, browser support and repository instructions were not confirmed in the material reviewed. Check the project’s own repository before you depend on any of them.
- The examples show counters, classes, timers, sliders and templates. They do not show data fetching, form validation, routing or complex state transitions.
When this approach is worth trying
The pattern fits best where the interface’s behaviour is simple and mostly visual: a toggle, a counter, a status indicator, or a repeated card whose appearance depends on a few values. It is also a useful way to understand how state can be separated from rendering. If your interface depends on server communication, shared application data or intricate business rules, the examples do not demonstrate that the pattern will carry the load, and you should evaluate a fuller state model before committing.
Quick Recap
Rank #4
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Recommended Free Tools
