CODEWITHSUNDEEP
javascriptnode.jsfunctionroutes
helplessdev
helplessdev

Reputation: 68

How to use one function within multiple files in node.js

So i have this one function which i am defining in my checkIfLogin.js

    function authCheck (req, res, next) {
      if (req.session.loggedin) {
          next();
      } else {
          res.render('login.ejs')
     }
  }

I want to use this function for e.g. in my dashboard.js, and clients.js page as well. How can i export function from one page and use it in ALL pgaes in my app. I have a main index.js file within my root dir that hosts all the imported files, but how can i import something like this to use the function within ALL files in my project?

Upvotes: 1

Views: 800

Answers (1)

fixiabis
fixiabis

Reputation: 373

Use modules:

Export your function in checkIfLogin.js:

exports.authCheck = function authCheck (req, res, next) {
  if (req.session.loggedin) {
    next();
  } else {
    res.render('login.ejs')
  }
}

Import your function in otherFile.js:

var authCheck = require('./checkIfLogin.js').authCheck;

The string in require is your file path.

another approach

if you want to call this function before or after any api route you can use middleware

express middleware

Upvotes: 1

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