Sometimes, we want to splice an array in half, no matter the size with JavaScript.

In this article, we’ll look at how to splice an array in half, no matter the size with JavaScript.

How to splice an array in half, no matter the size with JavaScript?

To splice an array in half, no matter the size with JavaScript, we get the index of the middle element in the array and use slice with that.

For instance, we write

const halfLength = Math.ceil(arrayName.length / 2);
const leftSide = arrayName.slice(0, halfLength);

to get the halfLength index.

We get the ceiling of the middle array length divide by 2 and use that with slice to get the first half the array.

The 2nd half we get by writing

const rightSide = arrayName.slice(halfLength);

Conclusion

To splice an array in half, no matter the size with JavaScript, we get the index of the middle element in the array and use slice with that.