CODEWITHSUNDEEP
javascriptnode.jsbash
Shivam
Shivam

Reputation: 2248

Unable to run node app.js file

I am learning node.js and I am trying to run the app.js file using the command node app.js but the bash returns nothing (no errors either). Here are the steps I followed:

$ brew install node

$ sudo npm install -g express

$ sudo npm install -g express-generator

after i get into a new folder I created I run

$ express testsite --hogan -c less

$ cd testsite && npm install

Finally

$ node app.js // returns no errors but nothing back except new command line...

Any help on this would be great.

Thanks!

Upvotes: 39

Views: 68529

Answers (8)

Naveed Abbas
Naveed Abbas

Reputation: 1187

Unable to run node app.js file

I came to this question in a very basic scenario. I was missing to mention an end point (response) and the browser was forever loading.

I fixed it with providing a response.

app.use ((req, res, next) => {
res.send('Hello World');
});

Upvotes: 0

Ashutosh Singh
Ashutosh Singh

Reputation: 21

the answer to this problem is simple ...... first save your file .... by command CMD + S

and then type - node app.js in terminal

Upvotes: 2

Nizar Kadri
Nizar Kadri

Reputation: 321

I had similar problem, I found that the problem was in a library called bcrypt,once i removed that library everything worked fine. So try to comment out the libraries you are using in app.js one by one and you will get to know which one is causing problem

Upvotes: 0

Rim Gazzah
Rim Gazzah

Reputation: 571

You have to add this code to app.js file, this will tell express to listen on port 3000 and display a log message

 app.listen(3000, function () {
console.log("Express server listening on port 3000");
});

Upvotes: 13

joeshepherdmba
joeshepherdmba

Reputation: 1

Add app.listen(3000); to your app.js file.

Upvotes: -2

NiallJG
NiallJG

Reputation: 1961

Try running nodejs app.js instead of node app.js

Upvotes: 14

user626818
user626818

Reputation: 1328

try npm start from testsite directory.

look at the package.json

scripts : { start : node bin/www }

So you must execute the www under the bin directory.

So instead of node app.js use node bin/www

Upvotes: 92

imagineerThat
imagineerThat

Reputation: 5553

After running...

express testsite --hogan -c less

I get the following message:

install dependencies:
  $ cd testsite && npm install

run the app:
  $ DEBUG=test ./bin/www

node app.js did not work for me either, but ./bin/www does.

FYI npm start also works for me. This basically runs ./bin/www.

EDIT: Was curious why node.app doesn't work, because I followed the same video guide. In the comments, someone said node changed their app start process since video was made.

Upvotes: 2

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