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Diff Checker.

Compare two blocks of text or JSON side-by-side with line-level (or structural, for JSON) diff highlighting. Runs entirely in your browser. How to use

+5-52 unchanged
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-function calculateTotal(items) {
-  let total = 0;
-  for (let i = 0; i < items.length; i++) {
-    total += items[i].price;
+function calculateTotal(items, discount = 0) {
+  let total = items.reduce((sum, item) => sum + item.price, 0);
+  if (discount > 0) {
+    total = total - (total * (discount / 100));
   }
-  return total;
+  return Math.max(0, total);
 }