/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

21 votes110 views2 answers
Nodejs check if file is running on server or client
Javascript Node.js
0 vote112 views1 answer
Nodejs express use streams
Javascript Node.js
33 votes113 views6 answers
Ubuntu nodejs update
Javascript Node.js
1 vote109 views1 answer
Create unique transaction ids nodejs
Javascript Node.js
0 vote121 views1 answer
How to rename zip file nodejs
Javascript Node.js
0 vote94 views1 answer
Use node js as backend with angular frontend
Javascript Node.js
1 vote101 views3 answers
Downgrade nodejs with nvm
Javascript Node.js
0 vote109 views1 answer
Nodejs fs delete entire folde
Javascript Node.js
7 votes93 views2 answers
Declare an array nodejs
Javascript Node.js
0 vote104 views2 answers
Delete dir nodejs
Javascript Node.js