AngularJS 5在ASP.NET项目中使用疑问：无CDN及简易安装方式咨询
Hey there! I totally get the confusion here—there's a massive shift between AngularJS (the original 1.x framework) and Angular (versions 2+, including 5) that explains why your old workflow doesn't translate directly. Let's break this down step by step.
Why Angular 5 Doesn't Have a "Simple CDN" Like AngularJS
First, let's clarify a key naming point: AngularJS only refers to the 1.x versions of the framework. Versions 2 and above (including 5) are just called Angular, and they're a complete rewrite—not an incremental upgrade. That's the root of the CDN difference:
- AngularJS was a single, self-contained library (like jQuery) that you could drop into a page via CDN and start using immediately. It had no dependency on module bundlers or modern JS tooling.
- Angular (2+) is a modular, component-based framework made up of dozens of separate packages (e.g.,
@angular/core,@angular/common,@angular/router). While CDN links do exist for these individual packages, using them directly is cumbersome: you'd need to import multiple scripts, include polyfills for older browsers, and set up a module loader (like SystemJS) to wire everything together. It's not the "drop-and-go" experience you had with AngularJS.
The Angular team officially recommends using package managers like npm because it handles dependency resolution, versioning, and integrates seamlessly with bundlers (Webpack, Angular CLI) that optimize your app for production.
Are There Easier Installation Options Than CMD/npm?
Absolutely! If you're working in Visual Studio, you have a couple of user-friendly alternatives:
- Visual Studio's Built-in npm Support: You don't have to open a CMD window. Right-click your ASP.NET project in Solution Explorer → select "Manage npm Packages". From there, you can search for and install all the Angular packages you need (
@angular/core,@angular/platform-browser, etc.) through a GUI, just like you would with NuGet. - Visual Studio Angular Project Templates: The simplest way to get started is to create a new "Angular" project directly in Visual Studio. This template automatically sets up the entire Angular environment: it installs all required npm dependencies, configures Webpack for bundling, and sets up a basic ASP.NET backend with Angular integration. You can start coding your Angular components right away without any manual setup.
- NuGet Packages (Use With Caution): There are third-party NuGet packages that bundle Angular, but these are not maintained by the Angular team. They often lag behind official updates and can introduce compatibility issues. It's far safer to stick with the official npm-based workflows.
Quick Recap
- AngularJS (1.x) and Angular (2+) are fundamentally different frameworks—don't think of 5 as an "update" to AngularJS.
- Angular's modular structure makes CDN usage impractical for most projects; npm is the official, supported approach.
- Visual Studio offers GUI-based npm management and pre-built templates to avoid CMD commands entirely.
内容的提问来源于stack exchange，提问作者E.Meir
