26 lines
619 B
Markdown
26 lines
619 B
Markdown
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---
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title: Array Length
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localeTitle: 数组长度
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---
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## 数组长度
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`length`是JavaScript中数组的一个属性，它返回或设置给定数组中的元素数。
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可以像这样返回数组的`length`属性。
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```js
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let desserts = ["Cake", "Pie", "Brownies"];
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console.log(desserts.length); // 3
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```
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赋值运算符与`length`属性一起可用于设置数组中的元素数量，如此。
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```js
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let cars = ["Saab", "BMW", "Volvo"];
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cars.length = 2;
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console.log(cars.length); // 2
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```
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#### 更多信息：
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global\_Objects/Array/length
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