- Categories: JavaScript Methods, JavaScript Reference, Reference
Quick Reference
The Array slice() method returns selected elements in an array as a new array, without changing the original array.
<!-- html element to place output -->
<p id="my_cars"></p>
// array
let cars = ['Lamborghini', 'Ferrari', 'Maserati', 'Alfa Romeo'];
// create new array
let new_cars = cars.slice(1, 3);
// output changed array info to HTML element
document.getElementById('my_cars').innerHTML = 'New Cars: ' + new_cars;
The way this works (see Syntax section below):
- The slice() method removes items from the original array starting from a specified position (in this case 1) and ending before a specified position (in this case 3)
Output
New cars: Ferrari,Maserati
Syntax
array.slice(start, end)
Parameters
| Parameter | Description |
|---|---|
| start | Start position; negative numbers select from the end of the array (default is 0) |
| end | End position; negative numbers select from the end of the array (default is last item) |
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
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JAVASCRIPT NOTES:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
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