Is there a difference between these methods of declaring an array ?

Question

What's the difference between declaring an array like this:
var courses = new Array();
courses[0] = "HTML";
courses[1] = "CSS";
courses[2] = "JS";

and declaring it like this :
var courses = ["HTML", "CSS", "JS"];

Answer 1

The solution of your doubt is here.

https://www.w3schools.com/js/js_arrays.asp

If you have more than 100, 200, 300 items in Array they you can use second type of declaration.

Answer 2

Second is simple, readable, and executes faster. I think the first form is more of a novelty-use type thing than practical, but I honestly find the first form a bit easier to understand. At least in terms of having the element index right there instead of having to constantly remind myself an array starts at 0.