質問編集履歴
2
間違った文章を変更しました
test
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test
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@@ -52,7 +52,7 @@
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chosen: false,
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-
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quantity: 0
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},
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@@ -64,7 +64,7 @@
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chosen: false,
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quantity: 0
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}
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@@ -180,7 +180,7 @@
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<button onClick={handleAdd(item.id) />
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<p>{item.
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<p>{item.quantity}個購入します</p>
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);
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1
Select.jsを更新しました。
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test
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@@ -78,17 +78,23 @@
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_handleAdd = id => event => {
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this.setState((prevState, props) => ({
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items: prevState.items.map(prevItem => {
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if(prevItem.id !== id) return prevItem;
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const it
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87
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const quantity = prevItem.quantity + 1;
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return { quantity, ...prevItem };
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})
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}));
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const
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console.log('state: ', this.state);
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item.percent = addCart;
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}
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