1
A
回答
4
类型注释不是ecmascript 6的一部分,它看起来像你使用的是Flow语法。对于Visual Studio代码,有extensions支持此语法。
+0
哦,谢谢!我是一个初学者... – morizotter
0
那些波浪红线是错误的。 你可以看到控制台中的错误类型是什么
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这看起来很像Typescript,而不是Javascript。 – JJJ