Why npm start does not open my React project?

Question

I would like to learn creating React apps. I just recently downloaded node.js and install npm. After that I try to run these basic commands in cmd and the last one does nothing (npm v6.14.4, node v12.16.3). I am new in frontend so i don't really know frameworks, npm and dependency stuff as well. Why npm start doesn't open localhost:3000 and the project?

npx create-react-app my-app
cd my-app
npm start

(These are from the offical site)

Just simply nothing happens

C:\Users\user\Desktop\web\React\my-app>npm start

C:\Users\user\Desktop\web\React\my-app>

what do you see in your console? – rotimi-best Apr 30 '20 at 16:34 — rotimi-best, Apr 30 '20 at 16:34

score 0 · Answer 1 · edited Apr 30 '20 at 16:41

0

Did the first command succeed? It should have create a folder named my-app, containing the new project.
I tried it, and the first command failed, with this error: npm ERR! Unexpected end of JSON input while parsing near '...+TzBvdSFpX51Nv4MZ\nYY'
So I tried this command: npm cache clean --force, and I tried the first command again. It worked!

edited Apr 30 '20 at 16:41

Dharman

30,962
25
85
135

answered Apr 30 '20 at 16:39

TheTisiboth

1,431
1
6
13

The first one did I have only problems with the last one. – Barney Apr 30 '20 at 16:42
Oh Ok. Can you show what is inside your package.json ? Because when you run `npm start`, it runs the script `start` that is defined in your package.json – TheTisiboth Apr 30 '20 at 17:00
https://i.stack.imgur.com/LxFrH.png – Barney Apr 30 '20 at 17:25
I know the answer here https://stackoverflow.com/questions/59016328/npm-run-doesnt-do-anything but thanks for helping! – Barney Apr 30 '20 at 17:30

Why npm start does not open my React project?

1 Answers1