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feat: 优化 arr.splice 翻译描述
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1-js/05-data-types/05-array-methods/article.md

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@@ -44,7 +44,7 @@ alert( arr.length ); // 3
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arr.splice(start[, deleteCount, elem1, ..., elemN])
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```
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它从索引 `start` 开始修改 `arr`:删除 `deleteCount` 个元素并在当前位置插入 `elem1, ..., elemN`最后返回已被删除元素的数组
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它从索引 `start` 开始修改 `arr`:删除 `deleteCount` 个元素并在当前位置插入 `elem1, ..., elemN`最后返回被删除的元素所组成的数组
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通过例子我们可以很容易地掌握这个方法。
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@@ -73,7 +73,7 @@ arr.splice(0, 3, "Let's", "dance");
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alert( arr ) // 现在 [*!*"Let's", "dance"*/!*, "right", "now"]
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```
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在这里我们可以看到 `splice` 返回了已删除元素的数组
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在这里我们可以看到 `splice` 返回了被删除的元素所组成的数组
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```js run
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let arr = [*!*"I", "study",*/!* "JavaScript", "right", "now"];

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