how to get last r in javascript code example

Example 1: javascript remove last character from string

var str = "Hello";
var newString = str.substring(0, str.length - 1); //newString = Hell

Example 2: how to remove last element in js

var array = [1, 2, 3, 4, 5, 6];
array.pop();
console.log(array);
//Output in console section:
//[1, 2, 3, 4, 5]