Send quantity of product from form to shopping cart

Question

I am developing a form where the difference of two dates is calculated. I need this difference to be added to the shopping cart as the product quantity with id = '18 '.

In the image, the difference between the two dates is 23 days.

The plugin that I use to make the form in Wordpress allows me to assign the OnClick event to the button.

As you realize in the image, I have put:

window.location="http://localhost/travelagent/?add-to-cart=18";

This line of code what it does is add me the product but only once, what I want is that it be added according to the amount calculated previously. In this example it would be 23.

Answer 1

您可以这样添加数量参数：

window.location="http://localhost/travelagent/?add-to-cart=18&quantity=23";

Answer 2

as answered by Reigel:

http://localhost/travelagent/?add-to-cart=18&quantity=23

To redirect to the cart automatically you need to change the setting on the WooCommerce Settings page -> Products -> Redirect to cart (checkbox).