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使未生效的语法高亮生效
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@ -89,7 +89,7 @@ const toArray = (() =>
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`Array.from`还可以接受第二个参数,作用类似于数组的`map`方法,用来对每个元素进行处理,将处理后的值放入返回的数组。
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```JavaScript
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```javascript
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Array.from(arrayLike, x => x * x);
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// 等同于
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Array.from(arrayLike).map(x => x * x);
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