function remove_last_child() {
var select = document.getElementById('parent_element');
select.removeChild(select.lastChild);
}array.splice(-1,1)var colors = ["red","blue","green"];
colors.pop();array.pop(); //returns popped element
//example
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.pop(); // fruits= ["Banana", "Orange", "Apple"];array.pop();array.pop();
// Example
var colors = ['Yellow', 'Red', 'Blue', 'Green'];
var removedColor = colors.pop(); // Green
console.log(colors); // ['Yellow', 'Red', 'Blue']