I'm looking for a way to efficiently iterate through arrays in JavaScript, specifically in groups of two or more elements. Most array methods tend to handle one item at a time, but I want a solution that allows me to process chunks of elements together. Ideally, I would like to pass these groups to a dynamic callback function. Any advice on how to achieve this? Thanks!
1 Answer
You could try something like this:
```javascript
const arr = [...Array(100)].map((_, i) => i);
processGroupsOf(arr, 3, (v) => console.log(v));
function processGroupsOf(arr, chunkSize, callback) {
for (let i = 0; i < arr.length; i += chunkSize) {
const slice = arr.slice(i, i + chunkSize);
callback(slice, arr, i, chunkSize);
}
}
``` This allows you to pass groups of elements to a callback function!
I was thinking along those lines too! I've implemented something similar using the array prototype, which adds a padding option for when groups aren't full, so it always returns the desired number of elements. I'm curious if my approach is overkill or if there are better alternatives out there.