how to empty an array in JavaScript

Question

Hi, if there is an array, is it possible to empty with .remove()

for instance if

   A = [1,2,3,4];

how can I empty that.

thanks

Answer 1

Very simple:

A = [];

Answer 2

If you need to keep the original array because you have other references to it that should be updated too, you can clear it without creating a new array by setting it's length to zero:

A.length = 0;