Combine a specific number of elements in an array using JavaScript's comma-separated join without relying on jQuery

Question

Combine a specific number of elements in an array using JavaScript's comma-separated join without relying on jQuery

In my current project utilizing Vue and Quasar, I am hesitant to incorporate jQuery. Any suggestions on how to achieve a comma-separated string from an Array without using a loop? Ideally, I want to only combine a specific number of elements together.

  Array.join(',')

Let's say, for instance, I have a list of publication IDs, where I need to eliminate duplicates and then group them into sets of 200 due to limitations with the web service. The initial array could potentially contain thousands of items.

30310060,30166592,29704517,29662190,29533787,28114741,27456065,27208808,26208975

The process involves sending chunks of 200 IDs at a time until the entire list has been processed. Eventually, the final string must be converted to JSON before transmitting it to the server. Any advice on handling this scenario would be greatly appreciated.

javascript vue.js

Answer 1

Answer №1

Does this code snippet seem suitable for your needs?

extractFirstN = function(array, number, separator){
   firstNElements = array.slice(0, number);
   return(firstNElements.join(separator));
}

This function extracts the first specified number of elements from an array and then concatenates them into a string. You can use it like this:

extractFirstN(array, 200, ",");

Answer 2

Does this code snippet seem suitable for your needs?

extractFirstN = function(array, number, separator){
   firstNElements = array.slice(0, number);
   return(firstNElements.join(separator));
}

This function extracts the first specified number of elements from an array and then concatenates them into a string. You can use it like this:

extractFirstN(array, 200, ",");

Answer 3

Answer №2

To eliminate the use of external libraries and stick to ES6, you can leverage an object to remove duplicate values in an array. You can then employ an asynchronous function to sequentially process a specified number of elements at a time, send them to the server, and upon receiving a response, proceed with the next batch. This approach can also be adapted to concurrently submit multiple batches if your server supports it, as opposed to submitting each batch one after the other.

// Create an object using the ids to ensure uniqueness
// Extract only the unique keys (or values)
const uniqueIds = Object.keys(ids.reduce((ids, id) => {
  ids[id] = id
  return ids
}, {}))

const submitInBatches = async (ids, batchSize) => {
  // Exit condition: no more ids remaining
  if (ids.length === 0) return

  // Take the next batch of ids and submit them
  const batch = ids.slice(0, batchSize)
  const results = await fetch(`/your/service?${batch.join(',')}`)
  // Process the results

  // Recursively call with the remaining ids
  return submitInBatches(ids.slice(batchSize), batchSize)
}

submitInBatches(uniqueIds, 200)

Answer 4

To eliminate the use of external libraries and stick to ES6, you can leverage an object to remove duplicate values in an array. You can then employ an asynchronous function to sequentially process a specified number of elements at a time, send them to the server, and upon receiving a response, proceed with the next batch. This approach can also be adapted to concurrently submit multiple batches if your server supports it, as opposed to submitting each batch one after the other.

// Create an object using the ids to ensure uniqueness
// Extract only the unique keys (or values)
const uniqueIds = Object.keys(ids.reduce((ids, id) => {
  ids[id] = id
  return ids
}, {}))

const submitInBatches = async (ids, batchSize) => {
  // Exit condition: no more ids remaining
  if (ids.length === 0) return

  // Take the next batch of ids and submit them
  const batch = ids.slice(0, batchSize)
  const results = await fetch(`/your/service?${batch.join(',')}`)
  // Process the results

  // Recursively call with the remaining ids
  return submitInBatches(ids.slice(batchSize), batchSize)
}

submitInBatches(uniqueIds, 200)

Combine a specific number of elements in an array using JavaScript's comma-separated join without relying on jQuery

Answer №1

Answer №2

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