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give me the code async await

Mr-Cooder answered on November 26, 2020 Popularity 3/10 Helpfulness 1/10

answer give me the code async await

related async and await

give me the code async await

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const express = require('express');
const { MongoClient } = require('mongodb');

const app = express();
const url = 'mongodb://localhost:27017';
const dbName = 'your_database_name';
const collectionName = 'your_collection_name';

// Connect to MongoDB
async function connectToDB() {
  try {
    const client = await MongoClient.connect(url);
    console.log('Connected to MongoDB');

    const db = client.db(dbName);
    const collection = db.collection(collectionName);

    return collection;
  } catch (error) {
    console.error('Failed to connect to MongoDB:', error);
    throw error;
  }
}

// Endpoint for paginated data
app.get('/data', async (req, res) => {
  try {
    const collection = await connectToDB();

    const pageSize = parseInt(req.query.pageSize) || 10; // Number of items per page
    const pageNumber = parseInt(req.query.pageNumber) || 1; // Page number

    if (pageNumber < 1) {
      res.status(400).json({ error: 'Invalid page number' });
      return;
    }

    const totalCount = await collection.countDocuments({});

    const totalPages = Math.ceil(totalCount / pageSize);

    if (pageNumber > totalPages) {
      res.status(404).json({ error: 'Page not found' });
      return;
    }

    const skip = (pageNumber - 1) * pageSize;

    const documents = await collection
      .find({})
      .skip(skip)
      .limit(pageSize)
      .toArray();

    res.json({
      documents,
      totalCount,
      totalPages,
      currentPage: pageNumber,
    });
  } catch (error) {
    console.error('Error while fetching documents:', error);
    res.status(500).json({ error: 'Internal Server Error' });
  }
});

// Start the server
app.listen(3000, () => {
  console.log('Server listening on port 3000');
});

Popularity 3/10 Helpfulness 1/10 Language javascript

Source: chat.openai.com

Tags: async-await javascript

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Contributed on Jun 16 2023

Mr-Cooder

0 Answers Avg Quality 2/10

Closely Related Answers

async and await

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// In JavaScript, An async function is a function declared with the async keyword, and the await keyword can then be permitted within it.
// Example;
function resolveAfter2Seconds() {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve('resolved');
    }, 2000);
  });
}

async function asyncCall() {
  console.log('calling');
  const result = await resolveAfter2Seconds();
  console.log(result);
  // expected output: "resolved"
}

asyncCall();
// The asnycCall function when run will wait for the await block which calls  resolveAfter2Seconds() before it logs the output to the console.
// We can also use the then method to wait for an async call before running another block of code.
// Example;
async function resolveAfter2Seconds() {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve('resolved');
    }, 2000);
  });
}

resolveAfter2Seconds().then(
  function(result){console.log(result)}  	
  function(error){console.log(result)}  	
);

// There are so many other ways of writing asychronous functions in javascript.
// Javascript is itself an asychronous language.

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jun 23 2022

Chukwujiobi Canon

0 Answers Avg Quality 2/10

async and await

Comment

function delayResult() {
 return new Promise(resolve => {
   setTimeout(() => {
     resolve(‘Done’);
   }, 5000)
 })
}
async function getResult() {
 let result = await delayResult();
 return result;
}
getResult();

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Nov 26 2020

Creepy Gábor

0 Answers Avg Quality 2/10

async and await

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 public async Task<MemberBEQResponseModel> GetCMSDataAsync(MemberBEQRequestModel memberBEQRequest)
 {
     var remoteUrl = FAASServerUrl.Replace("{{FAASRouter}}", "/api/GetCMSData");
     var BeqResponse = await PostAsync(remoteUrl, memberBEQRequest);
     return JsonConvert.DeserializeObject<MemberBEQResponseModel>(BeqResponse);

 }
 --execute other method (async) till then , wait till BeqResponse come (await ) ?

Popularity 9/10 Helpfulness 3/10 Language whatever

Source: Grepper

Tags: whatever whateve

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Contributed on Sep 07 2023

Nanu

0 Answers Avg Quality 2/10

give me the code async await

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give me the code async await

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