An everyday JavaScript reference, from strings and collections to async work and design patterns. Every example comes with an explanation, and most of them run.
• 23 sections: basic types, arrays and collections, classes, files, serialization, functions and arrow expressions, exceptions, regular expressions, async operations, databases, algorithms, design patterns.
• Run in the app: the example actually runs and the output appears under the code. Needs an internet connection.
• What changed in new versions: 10 sections from ES2015 to ES2024, with the old and the new code side by side.
• Keyword and function reference: over 170 articles, open in full, with no daily limit.
• SQL alongside: over 200 queries against a live practice database (JOIN, GROUP BY, subqueries, data types).
• Edit examples and add your own; they stay in the app and are always at hand.
• Search looks inside the code itself, not just the titles: remember a fragment and you will find the example.
• Everything except running works offline. No account needed.
WHAT THE FREE VERSION INCLUDES
12 runs and 12 edits a day; the counter resets every morning. The keyword reference is open without limits. Up to 5 examples of your own.
The full version unlocks every example, lifts the daily limits and raises the run limit to 30 a day. One purchase, no subscription.
Built by a developer for developers. In active development since 2015.
Calificaciones y reseñas
3.0
de 5
1 Calificaciones
• Copying code is open in the free version too, with no limit.
• Supports iOS 17 and macOS 14.
Versión 4.07
El desarrollador (Fedor Obraztsov) indicó que las prácticas de privacidad de la app pueden incluir el manejo de datos que se describe a continuación. Para obtener más detalles, consulta la política de privacidad del desarrollador .
No se recopilan datos
El desarrollador no recopila ningún dato en esta app.
Las prácticas de privacidad pueden cambiar; por ejemplo, según tu edad o las funciones que uses. Obtén detalles
El desarrollador indicó que esta app admite las siguientes funciones de accesibilidad. Obtén detalles
Si la función Compartir en familia está activada, podrás compartir con tu grupo familiar algunas de las compras dentro de apps y suscripciones.
Obtén detalles