Angular 4安装问题

Question

我已经在系统中安装了节点6.10.0，我还想安装angular 4。我正在使用命令npm安装-g@角度/cli@1.4但我做不到。需要一些建议。PS：我使用windows

Answer 1

首先从cli安装最新版本。然后在你的package.json的"dependencies"部分指定你想要的版本。例如，如果你想要Angular 4.3.4，那么你可以像一样编辑你的package.json文件

"dependencies": {
"@angular/animations": "^4.3.4",
"@angular/common": "^4.3.4",
"@angular/compiler": "^4.3.4",
"@angular/core": "^4.3.4",
"@angular/forms": "^4.3.4",
"@angular/http": "^4.3.4",
"@angular/platform-browser": "^4.3.4",
"@angular/platform-browser-dynamic": "^4.3.4",
"@angular/router": "^4.3.4",
...........................
...........................
}

同时更改您的devDependencies

"devDependencies": {
"@angular/compiler-cli": "^4.3.4",
"@angular/language-service": "^4.3.4",
.............
}

现在运行npm install

npm install

完成安装后，您应该通过ng -v命令查看您的版本，如以下

Angular CLI: 1.6.3
Node: 9.3.0
OS: linux x64
Angular: 4.4.6
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router, tsc-wrapped
@angular/cli: 1.6.3
@angular-devkit/build-optimizer: 0.0.38
@angular-devkit/core: 0.0.25
@angular-devkit/schematics: 0.0.48
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.3
@schematics/angular: 0.1.13
@schematics/schematics: 0.0.13
typescript: 2.4.2
webpack: 3.10.0

PS：根据您的问题，您已经提到npm install -g @angular/cli@1.4，当您尝试安装angular 4时，没有1.4版本