/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

0 vote208 views1 answer
Post xml with axios nodejs
Javascript Node.js
-2 votes208 views1 answer
.env file make in nodejs
Javascript Node.js
0 vote206 views3 answers
Post express node js input
Javascript Node.js
0 vote203 views1 answer
Extract rar file nodejs
Javascript Node.js
0 vote212 views1 answer
Nodejs string value check === and !==
Javascript Node.js
-1 vote205 views1 answer
Split and join in node js
Javascript Node.js
1 vote195 views1 answer
Nodejs check if express started
Javascript Node.js
62 votes263 views6 answers
Update nodejs ubuntu
Javascript Node.js
2 votes224 views2 answers
Nodejs csv to json from link
Javascript Node.js
0 vote224 views1 answer
Concept of node js with react js
Javascript Node.js