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content/side-project/online-order-system/index.md
@@ -177,7 +177,7 @@ function updateOrder(id, quantity) {
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- 輸入數量會即時更新購物車
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- 再重新渲染訂單與菜單數字同步
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-### 渲染訂單與金額(renderOrder)
+### 4.渲染訂單與金額(renderOrder)
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```c
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function renderOrder() {
@@ -224,15 +224,15 @@ function submitOrder() {
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- 檢查是否選購商品,若有則顯示「訂單已送出」並清空
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----c
+```c
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function clearOrder() {
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for (let id in cart) delete cart[id];
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discount = 1;
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document.getElementById('discount-code').value = '';
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renderOrder();
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renderMenu(document.getElementById('category-select').value);
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}
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----
+```
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- 清空購物車與折扣碼欄位
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- 回復所有初始畫面狀態
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