1,use prototype overwriting Product.Options.prototype.reloadPrice
Product.Options.prototype.oldReloadPrice = Product.Options.prototype.reloadPrice;
Product.Options.prototype.reloadPrice = function(){
this.oldReloadPrice();
var currentPrice = howToGetThePrice();
doSomethingWithTheCurrentPrice(currentPrice);
};
2,use jQuery get the current price by cleaning the html inside an span
function getCurrentPrice(){
var ds = optionsPrice.priceFormat.decimalSymbol,
gs =optionsPrice.priceFormat.groupSymbol,
pf=optionsPrice.priceFormat.pattern;
var price = 0;
jQuery('#product-price-<?php echo $_product->getId() ?>_clone span')
.html()
.replace(new RegExp("\"+gs,'g'),'')
.replace(new RegExp("\"+ds,'g'),'.')
.sub(/([0-9.,]+)/,function(matches){
price = parseFloat(matches[1]);
});
return price;
}
3,Update element value with this code，you can update total price with qty.
$('totalPrice').innerHTML = currentPrice * $('qty').value
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