diff --git a/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/POST.md b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/POST.md new file mode 100644 index 0000000000..c28a80af5e --- /dev/null +++ b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/POST.md @@ -0,0 +1,64 @@ + + +![book](images/book.jpg) + +Ahead-of-Time (AOT) compilation and Just-in-Time (JIT) compilation are two different methods for compiling Angular applications. Here's a breakdown of the differences between them: + +### **Ahead-of-Time (AOT) Compilation** + +**What is AOT?** + +- AOT compilation refers to the process of compiling your Angular application during the build phase, before the application is served to the browser. +- The Angular compiler converts your TypeScript and HTML templates into efficient JavaScript code ahead of time. + +**Advantages:** + +1. **Faster Rendering:** Since the compilation is done beforehand, the browser receives precompiled code, leading to faster rendering and better performance when the app loads. +2. **Smaller Bundle Size:** AOT eliminates the need for the Angular compiler in the client-side bundle, which reduces the overall bundle size. +3. **Improved Security:** AOT compilation checks your templates and bindings during the build process, catching errors early and reducing the risk of injection attacks. +4. **Early Error Detection:** Errors related to templates and bindings are caught during the build time rather than at runtime, leading to more robust and error-free applications. + +**When to Use:** + +- AOT is typically used in production builds because it provides better performance, smaller bundles, and more secure applications. + +**How to Use:** + +- AOT is the default when you run `ng build --prod` in an Angular project. + +### **Just-in-Time (JIT) Compilation** + +**What is JIT?** + +- JIT compilation occurs in the browser at runtime. The Angular compiler translates the TypeScript and HTML templates into JavaScript code just before the application runs in the browser. +- The application is compiled on the fly as the user interacts with it. + +**Advantages:** + +1. **Faster Build Time:** Since there’s no pre-compilation step, the build process is faster during development. +2. **More Flexible Development:** JIT allows for rapid iteration during development, as changes can be quickly reflected without needing to rebuild the entire application. +3. **Dynamic Components:** JIT allows for more flexibility in scenarios where components need to be dynamically created or compiled at runtime. + +**When to Use:** + +- JIT is typically used in development environments because it allows for quicker build times and easier debugging. + +**How to Use:** + +- JIT is the default compilation method when you run `ng serve` for development builds in Angular. + +### **Comparison Summary:** + +| Feature | AOT (Ahead-of-Time) | JIT (Just-in-Time) | +| ---------------------- | ----------------------------- | ---------------------------------- | +| **Compilation Timing** | At build time | At runtime | +| **Performance** | Faster application startup | Slower application startup | +| **Bundle Size** | Smaller (no Angular compiler) | Larger (includes Angular compiler) | +| **Error Detection** | Catches template errors early | Errors caught at runtime | +| **Use Case** | Production | Development | +| **Dynamic Components** | Less flexible | More flexible | + +### **Best Practices:** + +- **Use AOT** for production builds to ensure faster load times, smaller bundle sizes, and more secure applications. +- **Use JIT** during development to take advantage of quicker builds and easier debugging. \ No newline at end of file diff --git a/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/book.jpg b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/book.jpg new file mode 100644 index 0000000000..bb1b8e86dc Binary files /dev/null and b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/book.jpg differ diff --git a/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/cover.png b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/cover.png new file mode 100644 index 0000000000..236eddc965 Binary files /dev/null and b/docs/en/Community-Articles/2024-08-28-Understanding-AOT-vs-JIT/images/cover.png differ