angular 4发布后，如何使用angular cli创建特定的angular 2.4版本应用程序 [英] After angular 4 release, how to create specific angular 2.4 version app using angular cli

问题描述

Angular 4已发布，我想先学习Angular 2.为此，我尝试使用角度CLI，但是当我使用创建新应用时

Angular 4 has released, I want to learn angular 2 first. For that i tried to use angular CLI, but when i create new app using

ng new test-app

它将创建应用程序有角度的4版本.我应该使用哪个命令来专门创建有角度的2.4应用程序.

It creates the app the angular 4 version. Which command should i use to create specifically angular 2.4 app.

推荐答案

您为什么要首先学习Angular 2? Angular 4基本上是Angular 2，但进行了一些改进和更改. Angular使用语义版本控制，因此4.0基本上意味着进行了一些不兼容的API更改.我认为您可能希望Angular 2和Angular 4之间的差异类似于Angular 1和Angular 2之间的差异?事实并非如此. Angular 2是一个完整的重写-如果Angular不使用语义版本控制，则Angular 4基本上是Angular2.5.x.因此，如果您现在只是学习Angular，我建议您使用4.x

Why would you want to learn Angular 2 first? Angular 4 is basically Angular 2 with some improvements and changes. Angular uses semantic versioning so 4.0 basically means some incompatible API changes were made. I think maybe you expect the difference between Angular 2 and Angular 4 is similar to the difference between Angular 1 and Angular 2? That is not the case. Angular 2 was a complete rewrite - Angular 4 is basically Angular 2.5.x if Angular wasn't using semantic versioning. So if you are just learning Angular now, I'd suggest going with 4.x

还要查看 Angular的发布时间表，以进一步了解(每年计划2个主要版本).

Also check out the release schedule for Angular for further understanding (2 major versions planned per year).

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