Additional Parameter in array callback

Question

I try to log a foreach callback to a file inside my node app. I try to use:

    var logger = fs.createWriteStream('tests/temp.js', {
        flags: 'a' 
    })

    req.body.selection.forEach(myFunction(logger));

    logger.end() // close string

In the callback I try:

function myFunction(mylogger,postvalue) {
    Object.entries(myJsonData.testCases).forEach(([key, value]) => {
        if(postvalue == key){
            console.log("gefunden");
            mylogger.write('some data') // append string to your file
        }
    });
}

But this is wrong. Anyone can help me t find the brainbreak?

bereal · Accepted Answer · 2019-06-30 14:48:00Z

2

I suggest passing an arrow function expression which propagates both the logger and the callback argument to the destination:

req.body.selection.forEach((value) => myFunction(logger, value));

answered Jun 30, 2019 at 14:48

bereal

34.7k8 gold badges65 silver badges111 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Additional Parameter in array callback

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related