Like most languages, arrays in JavaScript are “base 0” meaning the first element has an index of 0 rather than 1. You can also see that myOtherArray can hold a diversity of types: numbers ...

JavaScript’s arrays can hold heterogeneous types, change size on the fly, and readily insert or remove elements. Traditional methods like slice, splice, and push/pop do this by operating on the ...

John Mueller from Google advises placing JavaScript code underneath the HTML element to ensure that search engines can clearly understand your website.