Updating Shopkeeper Prices Dynamically with JavaScript and changePrice

This donor contained a practical Shopkeeper customization: when the chosen option changes the current price, the frontend should also update related values such as the old price or the amount saved.

Key requirement

The setup depends on enabling:

[!Shopkeeper? &orderFormPage=`15` &changePrice=`1`!]

Example JavaScript extension

$(priceTxt).empty().append('<span style="display:none;">'+curPrice+'</span>'+newPrice);

var priceaktiaTxt = $('.shk-aktia-price:first', parent);
var aktiaPrice = parseFloat(newPrice) * 1.25;
$(priceaktiaTxt).empty().append('<span>'+aktiaPrice+'</span>');

The original note also calculated a separate savings value and rendered it into its own placeholder element.

Why this is useful

Many Evo stores need richer visual pricing than Shopkeeper outputs by default. Extending the frontend price-update logic lets you preserve the underlying cart mechanics while improving the storefront presentation.

The main caution is consistency: if JavaScript changes what the customer sees, the server-side order data must still match the same business rules.