[英]Nothing was returned from render
I have this error:我有这个错误:
Nothing was returned from render.
渲染没有返回任何内容。 This usually means a return statement is missing.
这通常意味着缺少 return 语句。 Or, to render nothing, return null.
或者,不渲染任何内容,返回 null。
My code :我的代码:
export default class Header_page extends Component {
render() {
return (
<Header>
<Left>
<Button transparent>
<Icon name='ios-menu' />
</Button>
</Left>
<Body>
<Title>{this.props.title}</Title>
</Body>
<Right>
<View>
{this.props.buttonRight}
</View>
</Right>
</Header>
);
}
}
Header_page.propTypes = {
title: PropTypes.string.isRequired,
buttonRight: PropTypes.func,
}
I don't understand what wrong thanks我不明白有什么问题谢谢
Seems like this.props.buttonRight
is declared as a function but you are not calling it, you should call it in your render()
like so this.props.buttonRight()
.似乎
this.props.buttonRight
被声明为一个函数,但你没有调用它,你应该在你的render()
调用它,就像this.props.buttonRight()
。 Make sure this.props.buttonRight()
returns some JSX or null确保
this.props.buttonRight()
返回一些 JSX 或 null
Edit编辑
A little note: when passing a function which returns some component, I'd recommend you call it renderSomething
, for example renderButton
.一点注意:当传递返回某个组件的函数时,我建议您将其
renderSomething
,例如renderButton
。 If you pass a Component instead, call it something
or button
如果你传递一个组件,而不是,把它
something
或button
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