How can I use JavaScript to split an array into chunks of a specific size?

General Discussions
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1

I have a JavaScript array with nearly a hundred elements like this:

["Element 1", "Element 2", "Element 3", ...];

What would be the best way to apply a JavaScript split array into chunks technique so that I can divide it into smaller arrays, each containing no more than 10 elements?

2

Hey, having worked with JavaScript for a good few years, I’ve often needed to split big arrays into smaller chunks manually. One of the easiest and clearest ways is by using a basic for loop. Here’s how you can do it:

function splitArrayIntoChunks(arr, chunkSize) {
    let result = [];
    for (let i = 0; i < arr.length; i += chunkSize) {
        result.push(arr.slice(i, i + chunkSize));
    }
    return result;
}

const arr = ["Element 1", "Element 2", "Element 3", "Element 4", "Element 5", "Element 6"];
console.log(splitArrayIntoChunks(arr, 2));

This method is super straightforward - you loop over the array, slicing it into parts of your desired size. If you’re just starting with the javascript split array into chunks concept, this is a great first approach. Plus, you get total control over the process if you need to tweak it later.

3

Jumping in here! After working on several modern web apps, I found a slightly cleaner, ES6+ way to achieve javascript split array into chunks, especially if you prefer more concise code. Instead of a for loop, you can use Array.from combined with map to make it super sleek:

function splitArrayIntoChunks(arr, chunkSize) {
    return Array.from({ length: Math.ceil(arr.length / chunkSize) }, (v, i) =>
        arr.slice(i * chunkSize, i * chunkSize + chunkSize)
    );
}

const arr = ["Element 1", "Element 2", "Element 3", "Element 4", "Element 5", "Element 6"];
console.log(splitArrayIntoChunks(arr, 2));

This works by first creating an array of the number of chunks we need, and then slicing up the original array during mapping. If you’re comfortable with ES6+ syntax, this feels much more elegant. Honestly, once you start thinking in modern JavaScript, techniques like this make tasks like javascript split array into chunks much more fun and readable!

4

Adding my two cents! Over the years while building large data-heavy apps, I realized that sometimes you need extra flexibility — that’s where a while loop approach shines for javascript split array into chunks problems. Here’s a version that’s easy to adapt:

function splitArrayIntoChunks(arr, chunkSize) {
    let result = [];
    let i = 0;
    while (i < arr.length) {
        result.push(arr.slice(i, i + chunkSize));
        i += chunkSize;
    }
    return result;
}

const arr = ["Element 1", "Element 2", "Element 3", "Element 4", "Element 5", "Element 6"];
console.log(splitArrayIntoChunks(arr, 2));

With the while loop, you keep pushing slices into the result array until you run out of elements. This makes it super simple to add any custom behavior if needed (like handling leftovers differently). If you’re working with very large arrays or need super fine-tuned behavior, this style really brings power to your javascript split array into chunks strategy.