{scripts：
 {build：node build.js} 
} 
 

npm run build OR npm run-script build

---

  {
name：build，
version：1.0.0，
scripts：{
start：node build.js
} 
} 
 

npm start

---

NB：您错过了 {bracket} 和node 命令

文件夹结构很好：

  + build 
  -  package.json 
  -  build.js 
 

I can't get npm to work. My package.json file has

"scripts": { "build": "build.js" }

and I have a build.js file in the same folder that just console.logs.

When I run

npm run build

I get the error

The system cannot execute the specified program.

npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "build"
npm ERR! node v4.1.1
npm ERR! npm  v3.3.5
npm ERR! code ELIFECYCLE

and if I move the build.js file and change my package.json file to have a subfolder

"scripts": { "build": "build/build.js" }

then I get the error

'build' is not recognized as an internal or external command, operable program or batch file.

What's going wrong? I'm copying the example documentation.

{ "scripts" :
  { "build": "node build.js"}
}

npm run build OR npm run-script build

---

{
  "name": "build",
  "version": "1.0.0",
  "scripts": {
    "start": "node build.js"
  }
}

npm start

---

NB: you were missing the { brackets } and the node command

folder structure is fine:

+ build
  - package.json
  - build.js