创建新的角度4项目时出错

Question

I have installed angular cli successfully but when i run this command "ng new myApp" it give an error

"ng is not recognized as an internal or external command" and when i run this command ""

+-- @angular/cli@1.4.1
+-- angular-cli@1.0.0-beta.28.3
+-- babel-core@6.25.0
+-- cordova@6.5.0
+-- ionic@2.2.3
+-- lite-server@2.3.0
+-- live-server@1.2.0
+-- nodemon@1.11.0
+-- npm@5.4.1
`-- udemy-dl@0.0.9

Errors are given below

npm ERR! peer dep missing: rxjs@^5.0.1, required by @angular/core@2.4.10
npm ERR! missing: q@^1.4.1, required by cordova-common@2.0.0
npm ERR! missing: underscore@^1.8.3, required by cordova-common@2.0.0
npm ERR! missing: base64-js@^1.0.2, required by buffer@4.9.1
npm ERR! missing: isarray@^1.0.0, required by buffer@4.9.1
npm ERR! missing: acorn@^4.0.3, required by syntax-error@1.3.0
npm ERR! missing: punycode@1.3.2, required by url@0.11.0
npm ERR! missing: inherits@2.0.1, required by util@0.10.3
npm ERR! missing: debug@2.6.4, required by finalhandler@1.0.2
npm ERR! missing: debug@2.6.1, required by send@0.15.1
npm ERR! missing: ms@0.7.2, required by send@0.15.1
npm ERR! missing: glob@^7.1.1, required by init-package-json@1.10.1
npm ERR! missing: glob@^7.1.1, required by read-package-json@2.0.5
npm ERR! missing: abbrev@~1.0.9, required by npm@2.15.12
npm ERR! missing: ansicolors@~0.3.2, required by npm@2.15.12
npm ERR! missing: ansistyles@~0.1.3, required by npm@2.15.12
npm ERR! missing: archy@~1.0.0, required by npm@2.15.12
npm ERR! missing: async-some@~1.0.2, required by npm@2.15.12
npm ERR! missing: char-spinner@~1.0.1, required by npm@2.15.12
npm ERR! missing: chmodr@~1.0.2, required by npm@2.15.12
npm ERR! missing: chownr@~1.0.1, required by npm@2.15.12
npm ERR! missing: cmd-shim@~2.0.2, required by npm@2.15.12
npm ERR! missing: columnify@~1.5.4, required by npm@2.15.12
npm ERR! missing: config-chain@~1.1.10, required by npm@2.15.12
npm ERR! missing: dezalgo@~1.0.3, required by npm@2.15.12
npm ERR! missing: editor@~1.0.0, required by npm@2.15.12
npm ERR! missing: fs-vacuum@~1.2.9, required by npm@2.15.12
npm ERR! missing: fs-write-stream-atomic@~1.0.8, required by npm@2.15.12
npm ERR! missing: fstream-npm@~1.1.1, required by npm@2.15.12
npm ERR! missing: github-url-from-git@~1.4.0, required by npm@2.15.12
npm ERR! missing: github-url-from-username-repo@~1.0.2, required by npm@2.15.12
npm ERR! missing: glob@~7.0.6, required by npm@2.15.12
npm ERR! missing: hosted-git-info@~2.1.5, required by npm@2.15.12
npm ERR! missing: init-package-json@~1.9.4, required by npm@2.15.12
npm ERR! missing: lockfile@~1.0.1, required by npm@2.15.12
npm ERR! missing: lru-cache@~4.0.1, required by npm@2.15.12
npm ERR! missing: node-gyp@~3.6.0, required by npm@2.15.12
npm ERR! missing: nopt@~3.0.6, required by npm@2.15.12
npm ERR! missing: normalize-git-url@~3.0.2, required by npm@2.15.12
npm ERR! missing: npm-cache-filename@~1.0.2, required by npm@2.15.12
npm ERR! missing: npm-install-checks@~1.0.7, required by npm@2.15.12
npm ERR! missing: npm-package-arg@~4.1.0, required by npm@2.15.12
npm ERR! missing: npm-registry-client@~7.2.1, required by npm@2.15.12
npm ERR! missing: npm-user-validate@~0.1.5, required by npm@2.15.12
npm ERR! missing: npmlog@~2.0.4, required by npm@2.15.12
npm ERR! missing: path-is-inside@~1.0.0, required by npm@2.15.12
npm ERR! missing: read-installed@~4.0.3, required by npm@2.15.12
npm ERR! missing: readable-stream@~2.1.5, required by npm@2.15.12

How can I solve it? What can be the problem?

Answer 1

Update or install angular cli package with the following command:

c:\ npm install -g @angular/cli

After that create a new project on your desired location by the following command:

c:\ npm new projectName

Answer 2

I think the problem starts with node installation . Please check the node versions by using

node -v
npm -v

node must be latest version as v8.5.0 and npm must be the latest version as 5.4.1

then please reinstall angular cli by using

npm install -g @angular/cli

then check the versions

ng -v

version will be 1.4.1 and if everything is ok you can create the project as

ng new myNewProject 

Answer 3

您应该在订单中全局安装Angular Client以直接调用ng命令，请运行：

npm install -g @angular/cli