/Javascript/Node.js/What is the meanof using next in nodejs

What is the meanof using next in nodejs

/*
Some people always write return next() is to ensure that the execution stops after triggering the callback.

If you don't do it, you risk triggering the callback a second time later, which usually has devastating results. 
*/

app.get('/users/:id?', function(req, res, next){
    var id = req.params.id;

    if(!id)
        return next();

    // do something
});

Source: stackoverflow.com

Similar codes

1 vote247 views1 answer
Html to pdf node js background color
Javascript Node.js
0 vote243 views1 answer
Run on localhost node js
Javascript Node.js
0 vote250 views1 answer
Node global directory windows
Javascript Node.js
2 votes180 views2 answers
Error: node sass version 6.0.0 is incompatible with ^4.0.0 || ^5.0.0.
Javascript Node.js
2 votes256 views1 answer
Axios node js set user agent
Javascript Node.js
0 vote248 views1 answer
Nodejs validate bnb wallet address
Javascript Node.js
0 vote254 views1 answer
How to understand if nodejs is out of memory
Javascript Node.js
0 vote242 views1 answer
Node js send javascript
Javascript Node.js
112 votes315 views6 answers
Node js install ubuntu
Javascript Node.js
9 votes261 views6 answers
Node js
Javascript Node.js