docs: 更新文章内容
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title: JavaScript 创建并初始化任意长度的数组
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title: "JavaScript 创建并初始化任意长度的数组"
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date: 2025-02-11T20:45:30Z
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lastmod: 2025-02-20T22:59:05Z
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tags: [JavaScript,Web 前端]
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@@ -44,7 +44,7 @@ var arr = [...new Array(5).keys()]; // [0, 1, 2, 3, 4]
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## 使用 Array.from()
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> `Array.from(arrayLike[, mapFn[, thisArg]])`
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> `Array.from(arrayLike[, mapFn[, thisArg]])`
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```javascript
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var arr = Array.from({length: 5}); // [undefined x 5]
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