24 lines
760 B
Markdown
24 lines
760 B
Markdown
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---
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title: Remove Elements from an Array Using slice Instead of splice
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localeTitle: 使用切片从阵列中删除元素而不是拼接
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---
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## 使用切片从阵列中删除元素而不是拼接
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* splice和slice方法之间的区别在于slice方法不会改变原始数组，而是返回一个新数组。
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* slice方法需要2个参数才能使索引开始和结束切片（结束是非包含的）。
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* 如果您不想改变原始数组，可以使用切片方法。
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## 解
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```javascript
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function nonMutatingSplice(cities) {
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// Add your code below this line
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return cities.slice(0, 3);
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// Add your code above this line
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}
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var inputCities = ["Chicago", "Delhi", "Islamabad", "London", "Berlin"];
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nonMutatingSplice(inputCities);
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```
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