JavaScript for Beginners #52 The concat() Array Method

Here, we will learn about the concat method for arrays in JavaScript. This method allows us to merge two or more arrays together.

0:00 Introduction to concat
0:12 Setting up two arrays
0:36 Merging two arrays using concat
1:26 Reversing the order
1:46 Using concat() with an empty array [].concat()
2:42 Writing a function that merges arrays using concat()
5:10 Using the forEach method to loop through our new array
6:07 Copying an array using concat()
8:17 Merging two arrays of objects using concat()
9:43 Using the forEach method to loop through our new array

Last Example:
class Items {
constructor(item, price, stock) {
}
description() {
}
}
const groceryItems = [
new Items("Bread", 3, 30),
new Items("Milk", 4, 50),
new Items("Steak", 5, 10),
new Items("Rice", 1, 100),
];
const generalItems = [
new Items("Broom", 10, 3),
new Items("Microwave", 50, 2),
new Items("TV", 1000, 1),
new Items("Paper", 2, 300),
];

JavaScript Playlist:

MDN concat() Method:

MDN forEach() Method:

MDN Classes:

NodeJS:

VS Code:

[meganbrown]

Do you like this better than using the spread operator ... to merge arrays?