41 lines
868 B
Markdown
41 lines
868 B
Markdown
---
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title: Delete Properties from a JavaScript Object
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localeTitle: 从JavaScript对象中删除属性
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---
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我们还可以删除对象中的属性，如下所示：
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```
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delete ourDog.bark;
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```
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**delete运算符**从对象中删除属性。
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## 句法
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`delete expression`应该求值为属性引用的表达式，例如：
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```
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delete object.property
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delete object['property']
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```
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## 参数
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**目的**
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对象的名称或评估对象的表达式。
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**属性**
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要删除的属性。
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## 例
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```js
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var person = {name:'Jay', age:'52'};
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delete person['age'];
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console.log(person); //{name:'Jay'}
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```
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## 返回值
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如果属性是自己的不可配置属性，则以严格模式抛出（在非严格中返回false）。在所有其他情况下返回true。
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[阅读更多](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete) |