45 lines
852 B
Markdown
45 lines
852 B
Markdown
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---
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title: Access Property Names with Bracket Notation
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localeTitle: 使用括号表示法访问属性名称
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---
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## 使用括号表示法访问属性名称
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方法：
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* 使用括号表示法只需在`checkInventory()`函数中编写return语句。
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* 以下代码块演示了所需的语法。
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## 例：
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```javascript
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let juice = {
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apple: 1.15,
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orange: 1.45
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};
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function checkInventory(scannedItem) {
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return juice[scannedItem];
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}
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```
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## 解：
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```javascript
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let foods = {
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apples: 25,
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oranges: 32,
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plums: 28,
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bananas: 13,
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grapes: 35,
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strawberries: 27
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};
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// do not change code above this line
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function checkInventory(scannedItem) {
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// change code below this line
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return foods[scannedItem];
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}
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// change code below this line to test different cases:
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console.log(checkInventory("apples"));
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```
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