Why only after the second click does adding and decreasing the quantity in the cart work?

Question

JavaScript

WP Woocommerce
Can't figure out what's wrong with adding and decreasing cart count. The first time I click on "+" or "-" the page reloads and nothing happens, the second time I click everything works.

https://mishka-furs.webtm.ru/cart/

Code:

// Функция кнопки плюс
$('.woocommerce-cart-form__cart-item .quantity .plus').click(function() {
    var currentVal = parseInt($(this).parent().find('input').val());
    parseInt($(this).parent().find('input').val(currentVal + 1));
  $('.actions button').removeAttr('disabled');
  $("[name='update_cart']").trigger("click");
  setTimeout(function() {
    window.location.reload();
  }, 250);
});
  
// Функция кнопки минус
$('.woocommerce-cart-form__cart-item .quantity .minus').click(function() {
    var currentVal = parseInt($(this).parent().find('input').val());
    parseInt($(this).parent().find('input').val(currentVal - 1));
  $('.actions button').removeAttr('disabled');
  $("[name='update_cart']").trigger("click");
  setTimeout(function() {
    window.location.reload();
  }, 250);
});

Answer 1

It is not necessary to reinvent your wheel every time, you can use ready-made solutions, look for woocommerce quantity increment github
Here are good solutions:

• wc-quantity-increment
  
• wc-quantity-increment-buttons
  

Answer 2

Click on + and then just reload the page via F5
. You first get the page, then the data in the database is updated.