In addition to arrays, JavaScript has objects that are similar to arrays, but do not support all of their features. Such objects are called pseudo-arrays.
Pseudo-arrays most often occur when working with DOM elements. Let's look at an example. Let's have paragraphs:
<p></p>
<p></p>
<p></p>
<p></p>
<p></p>
Let's get our paragraphs into a variable:
let elems = document.querySelectorAll('p');
The variable elems will
contain a pseudo-array:
console.log(elems); // it's a pseudo-array
In the following lessons, we will deal with the features of pseudo-arrays, consider how they are similar to regular arrays, and how they differ.