I need to change the frontend price of a product when two custom options dropdowns are selected. I have found some code in this question, but where do I put the files? change price


added below codeto the options file and nothing happens when I adjust the quantity ?




but now report 'Function expected'

UPDATE 3 I have the test code working now, Thanks. The real code doesnt work as expected, I want to update the price on the product page. This should equal the value of the dropdown multiplied x 4. Currently the code updates the price by adding 50 to it.

  • You can put the javascript in template/catalog/product/view/options.phtml
    – eetzen
    Commented Jul 29, 2015 at 9:36
  • doesnt appear to work, see updated answer pls. Commented Jul 29, 2015 at 9:58
  • Beware for this is clearly jQuery, you should not use "$" which is reserved to prototype. Consider api.jquery.com/jquery.noconflict Commented Jul 29, 2015 at 10:00
  • Do you have any error/warning in javascript console? Commented Jul 29, 2015 at 10:01
  • yes error occured so changed code, now a new error 'Function expected' Commented Jul 29, 2015 at 10:24

1 Answer 1


About your code, I sppose you meant

    var price=50; //add var declaration
}); //close the change binding

But where does optionsPrice come from? Pay a closer attention to the answers, I won't explain them here: your topic would be marked as 'duplicate' and you should ask for explanations on the original topic.

  • as i have under 50 reputation I cant add comment to orginal answer so grateful for support. optionsPrice came from the previous answer, I thought it was a class ?? I've now prefixed var infront of price=50 but still get summation of 50+price. Commented Jul 29, 2015 at 14:28
  • magento.stackexchange.com/a/60531/7773 -> if you want to update the price, that should not be in javascript (clientside) but in php (serverside) Commented Jul 29, 2015 at 14:35
  • Dont I need to do client side in addition to server side to give the user an immediate result? Commented Jul 29, 2015 at 15:05
  • Then you might consider ajax call, something like this question stackoverflow.com/q/15579192/2375207 Commented Jul 29, 2015 at 15:11
  • There it is, custom option price in the cart stackoverflow.com/a/23099871/2375207 Commented Jul 29, 2015 at 15:46

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