/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

6 votes187 views2 answers
Node js do request
Javascript Node.js
0 vote240 views1 answer
Node express app.listen at specific port & host
Javascript Node.js
0 vote223 views1 answer
React and node js sample project github
Javascript Node.js
0 vote217 views2 answers
Nodejs print variable in string
Javascript Node.js
1 vote169 views1 answer
Hosting html in node js
Javascript Node.js
-2 votes139 views1 answer
Nodejs read excel file to json
Javascript Node.js
0 vote192 views1 answer
Nodejs how to send html
Javascript Node.js
102 votes319 views4 answers
Node json stringify
Javascript Node.js
-2 votes177 views2 answers
Referenceerror document is not defined node js
Javascript Node.js
148 votes650 views22 answers
Install nodejs ubuntu
Javascript Node.js