Description

Seanox composite-js is a browser-native application runtime for single-page applications (SPAs) and micro-frontends.

Applications use the browser's programming model. HTML remains the primary view language, extended with expression language and binding to application logic; JavaScript remains the primary application language, extended with Routing and reactive rendering; CSS defines the presentation.

The runtime combines component-based composition and declarative UI to organize applications into modules, each containing a view, application logic and resources. These modules are composed into an application at runtime, without compilation.

Recommended CSS/UI frameworks:

• https://picocss.com/
• https://bulma.io/
• https://getbootstrap.com/
• https://vanillaframework.io/
• https://getuikit.com/
• https://fomantic-ui.com/
• https://w3schools.com/w3css/
• https://patternfly.org/ (CSS/HTML only)

Recommended are CSS-only, CSS-first and HTML-first UI toolkits that provide styling and optional UI components without replacing HTML or managing rendering, component lifecycle or application state.

Features

• Composite
  Modular application unit with its own identity, consisting of HTML, CSS, JavaScript and additional resources, composed at runtime.
• Runtime Composition
  Composite resources are resolved and loaded by the runtime, which realizes the composite within a concrete DOM context -- without compilation.
• Expression Language
  Expressions in markup provide access to client-side JavaScript, such as application data and the application module.
• Composite Binding
  Connects the view with the application module, without an additional wiring layer.
• Reactive Rendering
  Updates the affected parts of the view when reactive application data changes.
• Routing
  Declarative routing through paths (view flow), based on nested composites, with navigation, permission checks and interceptors.
• Architecture Neutrality
  The runtime provides the infrastructure for structuring and composing applications, without prescribing a specific application architecture such as MVC, MVCS or MVVM.
• DataSource
  Immutable XML data source for static application data, with locales, querying and transformation via XPath and XSLT.
• Resource Bundle
  DataSource extension for internationalization (i18n), localization (l10n) and other client-related texts, based on key-value entries.
• Test API
  API and runtime environment for integration and unit tests, with mechanisms for automated execution and simulated user input.

Manuals

• Getting Started
• Tutorials
• Manuals

Demos

• Micro-Frontend
• Single Page Application

License Terms

Seanox Software Solutions is an open-source project, hereinafter referred to as Seanox.

This software is licensed under the Apache License, Version 2.0.

Copyright (C) 2026 Seanox Software Solutions

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

System Requirement

• ECMAScript 6 support or higher (normally the current browsers)
  Engines (tested): Blink, Gecko, Goanna, WebKit
• Web server for hosting

Downloads

Seanox composite-js 2.0.0
Seanox composite-js 2.0.0 Sources

Release Channels

The release channels continuously provide the latest final versions.

Version 2.0.0

• https://cdn.jsdelivr.net/npm/@seanox/composite-js/release/composite-js.js
  for deployment without Test API

• https://cdn.jsdelivr.net/npm/@seanox/composite-js/release/composite-js-max.js
  for deployment without Test API not minimized and with comments

• https://cdn.jsdelivr.net/npm/@seanox/composite-js/release/composite-js-testing.js
  for development and testing

• https://cdn.jsdelivr.net/npm/@seanox/composite-js/release/composite-js-testing-max.js
  for development and testing not minimized and with comments

Changes

2.0.0 20260829

BF: Build: Optimizing npm access
BF: Build: Correction of the missing jsdelivr default
BF: Composite: Correction of the registration of the HTTP events
BF: Documentation: Update of content
BF: DataSource: Correction when fetch text nodes
CR: Composer: Refactoring the rendering
CR: Documentation: Using GitHub Pages
CR: Scripting: Omission of macro #module
CR: Test: Expansion of benchmarks/tests
CR: Tutorials: Integration into the project
CR: Project: Renamed to composite-js
CR: Project: Refactoring after renaming to composite-js

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