23 lines
646 B
Markdown
23 lines
646 B
Markdown
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---
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title: Add Items to an Array with push() and unshift()
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localeTitle: 使用push（）和unshift（）将项添加到数组
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---
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## 使用push（）和unshift（）将项添加到数组
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* 就像给出的示例一样，在数组上使用`.unshift()`方法将元素添加到数组的开头，并使用`.push()`方法将元素添加到数组的末尾。
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## 解：
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```javascript
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function mixedNumbers(arr) {
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// change code below this line
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arr.unshift('I',2,'three');
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arr.push(7,'VIII', 9);
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// change code above this line
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return arr;
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}
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// do not change code below this line
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console.log(mixedNumbers(['IV', 5, 'six']));
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```
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