Constructor for creating new arrays

In JavaScript, there are several ways to create a new array. Here are a few common methods:

The [] syntax: This is the most common way to create a new array. Simply use the square brackets [] and you'll get a new, empty array.
```
const myArray = [];
```
The Array() constructor: You can use the Array() constructor to create a new array. Pass in the desired length of the array as an argument.
```
const myArray = new Array(5); // creates an array of length 5
```
The Array.from() method: This method creates a new array from an iterable object, such as an array-like object or a string.
```
const myArray = Array.from('hello'); // creates an array ['h', 'e', 'l', 'l', 'o']
```
The ... spread operator: You can use the spread operator to create a new array from an existing array or iterable object.
```
const myArray = [...'hello']; // creates an array ['h', 'e', 'l', 'l', 'o']
```
The Array.prototype.concat() method: This method creates a new array by concatenating one or more arrays.
```
const myArray = [1, 2, 3].concat([4, 5, 6]); // creates an array [1, 2, 3, 4, 5, 6]
```
Note that when using the Array() constructor, you can also pass in an argument to specify the initial values of the array. For example:
```
const myArray = new Array(5, 10, 15); // creates an array [5, 10, 15]
```