So if you’d make a couple of slices of the original array it will stay intact. On the other hand, splice method gives the ability to edit initial array.Īrray.slice method does not affect the original array. JavaScript Array Splice vs Slice Difference Difference #1Īs you may note the main differences between Array.slice and Array.splice methods are that Slice does not affect the original array. Therefore when you write a starting position for Array.slice method you should start counting from zero, or just add one ahead after you’ve made a count.

Remember that arrays in JavaScript are zero-based. zero fingers, first finger, second finger, etc. Meaning that JavaScript starts counting data in the array from number 0. Always remember that arrays in JavaScript are zero-based. Now, we’ll take a little pause before examining code samples. And this method changes the contents of the original arrays. It removes existing data element and/or adds a new item to the array. So, the next function we’ll gonna look at is the splice function. To have the ability to take that portion array.slice can work with two arguments (see the Difference #3).

It returns a shallow copy of a portion of an array into a new array. Array.slice and array.splice are those two frequently used methods that will be required to access and change data inside those arrays.įirst let’s take a look at slice method. For example, images for galleries, banners, temporary user data, etc. JavaScript arrays are frequently used to store different types of data. We’ve decided to take a “programming” topic for a change and fill in some blank places in JavaScript development topic Specifically we’ll describe Array Splice and Slice methods, how you can use this stuff, and what the difference between them.

Slice in node js