小纠错 #124

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bigcake008 opened this issue Oct 11, 2024 · 1 comment

bigcake008 commented Oct 11, 2024

https://github.com/wangdoc/javascript-tutorial/issues/url

上面示例中，{}代表了 Object 类型，不打开strictNullChecks时，它包括了undefined和null，就相当于包括了所有类型的值，所以这时unknown类型可以赋值给{}类型，类型A就为number。打开strictNullChecks时，{}就排除掉了undefined和null，这时unknown类型就不能赋值给{}类型后，类型A就为string。

阮老师，这里类型A的判定写反了。

ruanyf closed this as completed in

635a5fa

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ruanyf commented Oct 12, 2024

谢谢指出，已经更正。

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