If end is omitted, slice extracts through the end of the sequence ( arr.length). slice(2,-1) extracts the third element through the second-to-last element in the sequence. A negative index can be used, indicating an offset from the end of the sequence. For example, slice(1,4) extracts the second element through the fourth element (elements indexed 1, 2, and 3). slice extracts up to but not including end. end Optional Zero-based index before which to end extraction. If start is greater than the index range of the sequence, an empty array is returned. If start is undefined, slice starts from the index 0.
slice(-2) extracts the last two elements in the sequence. Parameters start Optional Zero-based index at which to start extraction. If you'd like to contribute to the interactive demo project, please clone and send us a pull request. Here’s a sample function that splits an array into multiple smaller arrays:įor (let i = 0 i < arr.The source for this interactive demo is stored in a GitHub repository. In the function, loop through the original array, and within each iteration, use the `slice()` method to create smaller arrays of the desired size and push them into a new array. Create a function that accepts an array and a chunk size as input arguments.ģ.
Determine the desired size of each smaller array, which would be called ‘chunk size.’Ģ. You can split an array into multiple arrays in JavaScript using the `slice()` method. We will also provide usage examples so that you can see how it works in practice. In this blog post, we’ll look at how to use the `slice()` method and a simple function to split an array into multiple smaller arrays of desired size.
The `slice()` method is the perfect tool for this job, as it allows you to create new sub-arrays from existing ones. Splitting an array into multiple smaller arrays can be a useful task in JavaScript.
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