Objective-J
Objective-J is an extension to the Objective-C programming language that adds JavaScript functionality and syntax. It allows developers to mix JavaScript code into their Objective-C codebase.
Objective-J: Mixes JavaScript with Objective-C
Objective-J is an extension to the Objective-C programming language that adds JavaScript functionality and syntax, allowing developers to mix JavaScript code into their Objective-C codebase.
What is Objective-J?
Objective-J is an extension to the Objective-C programming language that aims to make Objective-C more like JavaScript. It was created by Francisco Tolmasky and adds a layer on top of Objective-C that allows developers to use JavaScript syntax and capabilities within Objective-C code.
Some key features of Objective-J include:
- The ability to create object literals, arrays, numbers, and strings like in JavaScript
- Using dot syntax for calling methods rather than brackets
- Adding JavaScript functions like prototype, call, apply, etc.
- Support for categories, protocols, and other Objective-C features
- The option to organize code into .j files instead of .m files
Overall, Objective-J makes it easier for web developers familiar with JavaScript to write native iOS and Mac apps without learning the full Objective-C language. It transpiles JavaScript code down to vanilla Objective-C so that it can still be compiled with Apple's tools and runtime. Many parts of the Cocoa and Cocoa Touch APIs have also been objectified to feel more JavaScript-like.
Objective-J Features
Features
- Adds JavaScript syntax and functionality to Objective-C
- Allows mixing of JavaScript and Objective-C code
- Provides access to JavaScriptCore framework
- Supports closures, prototypes, JSON serialization
Pricing
- Open Source
Pros
Leverages existing Objective-C and Cocoa knowledge
Enables use of JavaScript for app logic
Increases developer productivity
Cons
Less performant than pure Objective-C
Increases app size due to JavaScriptCore dependency
Less mature ecosystem than pure Objective-C
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