Variable scope of callback function

Question

I'm trying to use callback function in node js so I pass variable and callback function like this:

if(true){
await this.serialNumber(customer, async serial => {
console.log(serial); // it's log 43435543
});

// I need to use that serial out of the scope of that function by passing it to this new function
await this.storeinDB(customer, serial);
}

// this is the function where pass variable to callback function
async serialNumber(customer, callback){
const serial = "43435543";
callback(serial);
}

Is there a way to do that?

1565986223 · Accepted Answer · 2019-04-21 06:50:45Z

1

Call the other function inside the callback like. Since you're not working with Promise using async/await makes no differece.

if(true){
  this.serialNumber(customer, function (serial) {
    console.log(serial); // it's log 43435543
    this.storeinDB(customer, serial);
  });
}

// this is the function where pass variable to callback function
serialNumber(customer, callback){
  const serial = "43435543";
  callback(serial);
}

answered Apr 21, 2019 at 6:50

1565986223

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