当我试图打开我的反应应用程序时，CMD 显示 npm 错误：说'npm err？ 缺少脚本：开始'任何人都可以帮助我吗？

Question

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I've searched in previous answers and tried to solve this for many hours but with no success. I've typed in the terminal npm create-react-app, moved to the correct cd, and it gives me this error:

'npm ERR: missing script: start'

Answer 1

Start by validating that the 'start' script exists inside the package.json. That's where the script gets invoked. It should be under the key "scripts". If it's not there then that's the problem.

Should look something like this (if using react-scripts dependency):

"scripts": {
    "start": "react-scripts start",
    ....
}

And if you're missing dependencies then run the following command inside the project directory to install them:

npm install

Answer 2

You should ensure that you have package.json in your project and it has the command start registered in it, example

"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"

},