Angular-使用ng update命令升级到Angular7.1.4

Angular CLI 是 Angular 的一个命令行工具，可以便捷的执行创建项目、创建文件、测试、打包和发布等任务。

关于 Angular 版本

Angular 2.x及以上统称Angular. Angular 1.x 则称为 AngularJS.

Angular 2 发布于 2016年09月14日。
Angular 4 发布于 2017年03月23日。
Angular 5 发布于 2017年11月01日。
Angular 6 发布于 2018年05月03日。
Angular 7 发布于 2018年10月18日。

安装 Angular CLI

使用npm命令安装@angular/cli:

$ npm install -g @angular/cli

参数-g表示全局安装。

代码实例:

$ npm install -g @angular/cli
/usr/local/bin/ng -> /usr/local/lib/node_modules/@angular/cli/bin/ng
+ @angular/cli@7.1.4
updated 9 packages in 16.798s

使用ng update命令更新Angular

使用 ng update 命令可以查看更新:

如果有packages更新,会提示出来，并给出更新命令:

$ ng update
We analyzed your package.json, there are some packages to update:Name             Version          Command to update-----------------------------------------------------------@angular/cli    7.1.3 -> 7.1.4  ng update @angular/cli@angular/core   7.1.3 -> 7.1.4  ng update @angular/coreThere might be additional packages that are outdated.
Run "ng update --all" to try to update all at the same time.

可以看到，当前项目下有2个包可以更新。

(1) 使用 ng update 更新 @angular/cli 包:

$ng update @angular/cliUpdating package.json with dependency @angular/cli @ "7.1.4" (was "7.1.3")...
UPDATE package.json (1528 bytes)
updated 9 packages in 20.362s

再次查看,还有@angular/core需要更新:

$ ng update
We analyzed your package.json, there are some packages to update:Name             Version            Command to update--------------------------------------------------------------@angular/core    7.1.3 -> 7.1.4     ng update @angular/coreThere might be additional packages that are outdated.
Run "ng update --all" to try to update all at the same time.

(2) 使用 ng update 更新 @angular/core 包:

$ng update @angular/core
Updating package.json with dependency @angular/compiler-cli @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/language-service @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/core @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/common @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/platform-browser @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/compiler @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/animations @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/router @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/forms @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/platform-browser-dynamic @ "7.1.4" (was "7.1.3")...
Updating package.json with dependency @angular/http @ "7.1.4" (was "7.1.3")...
UPDATE package.json (1528 bytes)
updated 11 packages in 49.411s

再次使用 ng update 检测，已经没有新的更新了。

$ ng update              We analyzed your package.json and everything seems to be in order. Good work!

(3) 更新完成后，使用 ng version 查看各个包的版本：

$ ng versionAngular CLI: 7.1.4
Node: 10.11.0
OS: darwin x64
Angular: 7.1.4
... animations, cli, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, routerPackage                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.10.6
@angular-devkit/build-angular     0.10.6
@angular-devkit/build-optimizer   0.10.6
@angular-devkit/build-webpack     0.10.6
@angular-devkit/core              7.0.6
@angular-devkit/schematics        7.1.4
@ngtools/webpack                  7.0.6
@schematics/angular               7.1.4
@schematics/update                0.11.4
rxjs                              6.3.3
typescript                        3.1.6
webpack                           4.19.1

参考链接

https://github.com/angular/angular-cli/wiki

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