运行 Express.js 时 Node.js Package.json 文件错误

Question

I am new to using Node.js

I have a project folder structure C:\A\B\C\

I have C:\A\B\C\html_pages\index.html in which I have React.js code having CDN

and C:\A\B\C\server.js which has Express.js code which I want to run.

1. I installed nvm then installed Node.js using command nvm install 4.5

2. In windows PowerShell, I went to project directory C:\A\B\C and used npm init (node_modules were not created in this step)

3. Did npm install express --save to use the express module (now node_modules folder was created but package.json was inside express folder)

4. Used npm start to start the web server but it gave following error.

ENOENT: no such file or directory, open 'C:\A\B\C\package.json' I checked the posts on Stackoverflow for this error but was not able to solve it. Should the package.json be generated directly under 'C:\A\B\C\ ? I have installed Node.js in C:\Program Files\nodejs while project is not under Program Files, is this related to this?

PS : Used npm init --yes so that it installs node_modules inside my project folder and got the request processed but port 3000 gives error that it did not get GET request

Answer 1

The package.json file should be on the root of your directory. Open command line from your root directory and type,

npm init

This will generate a package.json file on that directory.