What's the 3 means?

Question

var courses = new Array(3);
courses[0] = "HTML";
courses[1] = "CSS";
courses[2] = "JS";

document.write(courses[2]);

- Hello peers, may I ask, what do “3” means in new Array? Thanks in advance!

Answer 1

3 means the size of the array..You see the array consists 3 elements (0-2) and it can't contain any more.So it is the size of the array