你可以从终端使用angular 2之后的版本，

ng -v



    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/

Angular CLI: 1.7.3
Node: 9.3.0
OS: linux x64
Angular: 5.2.9
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.7.3
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.5.3
webpack: 3.11.0
mohideen@root:~/apps/UI$ 

你也可以检查package.json:

"dependencies": {
    "@angular/common": "^5.0.0",
    "@angular/compiler": "^5.0.0",
    "@angular/core": "^5.0.0",
    "@angular/forms": "^5.0.0",
    "@angular/http": "^5.0.0",
    "@angular/platform-browser": "^5.0.0",
    "@angular/platform-browser-dynamic": "^5.0.0",
    "@angular/router": "^5.0.0",
  }

(插入号^将更新到最新的主版本(第一个数字)。 ^4.3.0将匹配任何4.x。X版本包括4.4.0，但将推迟到5.0.0。 波浪号~匹配最近的次要版本(中间的数字)。 ~4.3.0将匹配所有4.3。X版本，但将错过4.4.0。)

你可以输入ng版本 这是它

这很简单， 你可以在包装上看到。json文件

有多种方法:

您可以从您的包中验证。json文件 使用如下命令:

的 --版本

上面的命令将导致以下输出:

Angular CLI: 7.0.3 Node: 9.4.0 OS: darwin x64 Angular: 7.0.1 ... animations, common, compiler, compiler-cli, core, forms ... http, language-service, platform-browser ... platform-browser-dynamic, router Package Version @angular-devkit/architect 0.10.3 @angular-devkit/build-angular 0.10.3 @angular-devkit/build-optimizer 0.10.3 @angular-devkit/build-webpack 0.10.3 @angular-devkit/core 7.0.3 @angular-devkit/schematics 7.0.3 @angular/cli 7.0.3 @ngtools/webpack 7.0.3 @schematics/angular 7.0.3 @schematics/update 0.10.3 rxjs 6.3.3 typescript 3.1.4 webpack 4.19.1

因此，Angular、Angular CLI、Node和许多其他包的版本都可以从这里验证。

只需在命令中输入ng v即可

你会得到这样的结果

Angular CLI: 7.3.9
Node: 12.11.0
OS: win32 x64
Angular: 7.2.15
... common, compiler, compiler-cli, core, f
... language-service, platform-browser, pla
... router

Package                           Version
-------------------------------------------
@angular-devkit/architect         0.13.9
@angular-devkit/build-angular     0.13.9
@angular-devkit/build-optimizer   0.13.9
@angular-devkit/build-webpack     0.13.9
@angular-devkit/core              7.3.9
@angular-devkit/schematics        7.3.9
@angular/cli                      7.3.9
@ngtools/webpack                  7.3.9
@schematics/angular               8.0.0
@schematics/update                0.13.9
rxjs                              6.5.3
typescript                        3.1.6
webpack                           4.29.0