Why you can check if array exists in Javascript with .length

Question

As I Java programmer I do not understand why you can check if the array is empty using if(array.length). Can someone please elaborate?

Answer 1

Actually array.length is evaluated as true when it has at least one element. When array is empty array.length returns 0 which is evaluated as false.

So the bottom line is you can use if (array.length) to check if array is NOT empty.