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leviding merged 11 commits into from
Apr 5, 2020
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Update translation of 2-ui/99-ui-misc/03-event-loop and other files #709

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2 changes: 1 addition & 1 deletion 1-js/05-data-types/01-primitives-methods/article.md
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Expand Up @@ -68,7 +68,7 @@ alert( str.toUpperCase() ); // HELLO

所以原始类型可以提供方法，但它们依然是轻量级的。

JavaScript 引擎高度优化了这个过程。它甚至可能跳过创建额外的对象。但是它仍然必须遵守规范，并且表现得好像它创造了一样。
JavaScript 引擎高度优化了这个过程。它甚至可能跳过创建额外的对象。但是它仍然必须遵守规范，并且表现得好像它创建了一样。

数字有其自己的方法，例如，[toFixed(n)](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed) 将数字四舍五入到给定的精度：

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2 changes: 1 addition & 1 deletion 1-js/10-error-handling/2-custom-errors/article.md
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Expand Up @@ -119,7 +119,7 @@ try {
// ...
```

使用 `instanceof` 的版本要好得多，因为将来我们会对 `ValidationError` 进行扩展，创造它的子类型，例如 `PropertyRequiredError`。而 `instanceof` 检查对于新的继承类也适用。所以这是面向未来的做法。
使用 `instanceof` 的版本要好得多，因为将来我们会对 `ValidationError` 进行扩展，创建它的子类型，例如 `PropertyRequiredError`。而 `instanceof` 检查对于新的继承类也适用。所以这是面向未来的做法。

还有一点很重要，在 `catch` 遇到了未知的错误，它会在 `(**)` 行将该错误再次抛出。`catch` 块只知道如何处理 validation 错误和语法错误，而其他错误（由于代码中的错字或其他未知的错误）应该被扔出（fall through）。

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