Asynchronous functions within the next context

Question

Asynchronous functions within the next context

Hello there! I am trying to send the client's IP address from the frontend in a Next.js application to the backend.

To retrieve the IP, I am using the following function:

    async function getIP() {
        var clientIP = await publicIp.v4();
        return clientIP;
    }
    export default getIP;

and then sending it using axios post.

    getIP().then(ipAddress => {
       axios.post('/api/ip', {

                body: ipAddress

            }). then((res) => {}...}

The server is able to display the IP address in the console, but...

var receivedIP = req.body;
  console.log(receivedIP); // ***undefined***

javascript asynchronous axios next.js

Answer 1

Answer №1

It is important to note that when dealing with an asynchronous function, you are not receiving a string directly; instead, you are getting a promise of a string, which essentially means it's a promise for the data.

The data contained within the promise can only be accessed once the promise has been resolved.

function getIpSomehow() {
  return new Promise(res => {
      setTimeout(() => {
          res("127.0.0.1")
        },500)}
      )
  }
async function getIp() {
    //var c = await publicIp.v4();
    const c = await getIpSomehow();
    return c;
}

getIp().then(ip => {
    //all axios stuff in here
    console.log(ip)
})
//however as you may see getIp function is quite useless so we could as well do 
// getIpSomehow().then(...)

Answer 2

It is important to note that when dealing with an asynchronous function, you are not receiving a string directly; instead, you are getting a promise of a string, which essentially means it's a promise for the data.

The data contained within the promise can only be accessed once the promise has been resolved.

function getIpSomehow() {
  return new Promise(res => {
      setTimeout(() => {
          res("127.0.0.1")
        },500)}
      )
  }
async function getIp() {
    //var c = await publicIp.v4();
    const c = await getIpSomehow();
    return c;
}

getIp().then(ip => {
    //all axios stuff in here
    console.log(ip)
})
//however as you may see getIp function is quite useless so we could as well do 
// getIpSomehow().then(...)

Asynchronous functions within the next context

Answer №1

Similar questions

Disabling the click functionality using ng-disabled on an anchor tag is effective, but the tag remains

retrieve the index from the chosen elements

Showing the outcome of a PHP function within a div container

Show or hide a fixed position div using jQuery when clicked

Utilize separate production environments for each client on the NodeJS server to ensure seamless operation and

Performing an automated check on user messages every 60 seconds using JQuery and Ajax

What is the best way to notify the user about the input in the textbox?

Baffled by the data visualization produced by Google Chart using information from

Next.js encountered an issue when trying to read properties of null, specifically the 'push' property, resulting in a TypeError

Vue js: Stop Sorting array items; only display the resulting array

The payment button will not display within the next 12 hours after integrating the Snap Finance SDK

The art of positioning images and creatively cropping

Integrating React js with Layout.cshtml: Mastering the Fusion of React Routing and ASP.NET MVC Routing

Evaluating Vue.js Watchers using Jasmine

Create a custom slider using jQuery that pulls in real-time data for a dynamic user

How can I automatically close the menu when I click on a link in Vue?

Build a new shop using a section of data from a JSON database

Having trouble retrieving the JSON value as it returns undefined

What is the ideal way to utilize Vue within the framework of multiple pages?

Working with repeated fields in Google protobuf in JavaScript