我正在学习react-native导航https://reactnavigation.org/docs/intro/.我在例子中看到了
class HomeScreen extends React.Component {
static navigationOptions = {
title: 'Welcome',
};
render() {
const { navigate } = this.props.navigation;
return (
<View>
<Text>Hello, Chat App!</Text>
<Button
onPress={() => navigate('Chat')}
title="Chat with Lucy"
/>
</View>
);
}
}
我不明白这行代码到底是什么意思
语法与React Native无关
const { navigate } = this.props.navigation;
除了var和const之外，它与.
var navigate = this.props.navigation.navigate
不进行分解的示例应该如下所示
class HomeScreen extends React.Component {
static navigationOptions = {
title: 'Welcome',
};
render() {
return (
<View>
<Text>Hello, Chat App!</Text>
<Button
onPress={() => this.props.navigation.navigate('Chat')}
title="Chat with Lucy"
/>
</View>
);
}
}