/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

9 votes147 views2 answers
Nodejs dirname
Javascript Node.js
14 votes158 views2 answers
Nodejs fs delete file
Javascript Node.js
0 vote147 views3 answers
Nodejs pub sub redis
Javascript Node.js
0 vote139 views2 answers
Cannot read property 'find' of undefined nodejs
Javascript Node.js
0 vote147 views1 answer
How to get user info from google oauth node js
Javascript Node.js
1 vote146 views1 answer
Save text to file nodejs
Javascript Node.js
5 votes169 views2 answers
Read txt file in node js
Javascript Node.js
6 votes181 views3 answers
Nodejs request api
Javascript Node.js
0 vote150 views1 answer
Hot to set file views in nodejs
Javascript Node.js
0 vote166 views1 answer
How to include build script in node js
Javascript Node.js