2
By Looking at your code, Either jQuery is not loaded properly or your selector for currency is wrong:
Try below code:
Using Plain JavaScript:
var currencyField = document.querySelector("input[title^='Currency']"); //Here "Currency" is display name of field.
var currencyValue = currencyField.value;
currencyField.addEventListener('change', ...
1
You can bind a field customzer to the append-only field:
https://docs.microsoft.com/en-us/sharepoint/dev/spfx/extensions/get-started/building-simple-field-customizer
Then, retrieve data from the version history with pnp and display it in the view:
pnp.sp.web.getList(listUrl)
.items
.getById(id)
.versions
.get(...
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