How to get the last element of an array and remove it from the array in JavaScript?

Question

var arr = [1,2,3,4]; 

I need to get the last one and then remove it from an array named arr :

 var arr = [1,2,3] 

Answer 1

You want to do exactly what pop does:

 var arr = [1,2,3,4]; //... var last = arr.pop(); // returns 4, and arr will contain now [1, 2, 3]