Toggle Cart: The toggle cart function toggle the cart through this function. It means, calling this function on an open cart will close it and calling it while the cart is closed, will open the cart. This function can be used to bind any custom button with the cart and hide the default floating cart icon.
Open Cart: The open cart function simply open the cart and does nothing if the cart is already open.
Close Cart: This works similar to the open cart function. The only difference is that it closes the cart if its open.
Is Cart Empty: The last JS function is very important. It is wise not to perform any operation on an empty cart. This function is quite straightforward. You can call it at any point in time and it will let you know if the cart is empty or not.