changed price format

backend/core/static/price-format.js

@@ -1,5 +1,16 @@
 document.addEventListener("DOMContentLoaded", () => {
-    document.querySelectorAll(".price-input").forEach((input) => {
+    initPriceInputs(document);
+
+    document.addEventListener("formset:added", (event) => {
+        initPriceInputs(event.target);
+    });
+});
+
+function initPriceInputs(root) {
+    root.querySelectorAll(".price-input").forEach((input) => {
+        if (input.dataset.formatted) return;
+        input.dataset.formatted = "true";
+
         input.value = format(input.value);
 
         input.addEventListener("input", () => {
@@ -8,13 +19,14 @@ document.addEventListener("DOMContentLoaded", () => {
             input.value = format(raw);
             input.setSelectionRange(cursor, cursor);
         });
-        input.form.addEventListener("submit", () => {
+
+        input.form?.addEventListener("submit", () => {
             input.value = input.value.replace(/,/g, "");
         });
     });
-});
+}
 
-const format = (value) => {
+function format(value) {
     if (!value) return "";
     return value.replace(/\D/g, "").replace(/\B(?=(\d{3})+(?!\d))/g, ",");
-};
+}