React Native Buttons.slice 不是一个函数

Question

我正在尝试使用 Alert.alert 打印变量，它可能是我，但我无法做到这是我的代码

const [reg, setRegion] = useState('');
      Alert.alert(
      "Confirm",
      "this is just a "  + {reg},  
      [
        {
          text: "Cancel",
          onPress: () => console.log("Cancel Pressed"),
          style: "cancel"
        },
        { text: "OK", onPress: () => console.log("OK Pressed") }
      ],
      { cancelable: false }
    );
    }

如何使用字符串打印 {reg} 变量？

Answer 1

如果您在 React Native 中使用 Alert 时遇到此问题，下面的解决方案对我有用。

Alert.alert("Error", "Enter an item", [{ text: "OK" }]);

Answer 2

const [reg, setRegion] = useState('');
  Alert.alert(
  "Confirm",
  `this is just a ${reg}`,  
  [
    {
      text: "Cancel",
      onPress: () => console.log("Cancel Pressed"),
      style: "cancel"
    },
    { text: "OK", onPress: () => console.log("OK Pressed") }
  ],
  { cancelable: false }
);
}