Quick Reference
The Array concat() method joins two or more arrays, returning a new array containing the joined arrays, without changing the existing arrays.
<!-- html element to place output -->
<p id="my_cars"></p>// existing arrays
let cars_1 = ['Lamborghini', 'Ferrari'];
let cars_2 = ['Maserati', 'Alfa Romeo'];
// concat arrays
let cars_3 = cars_1.concat(cars_2);
//output new array content
document.getElementById('my_cars').innerHTML = cars_3;Note
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.
Output
Lamborghini,Ferrari,Maserati,Alfa RomeoSyntax
array1.concat(array2, array3, ..., etc.)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)
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.