reactjs - React格式化以进行渲染-语法-意外 token

Question

我想知道为什么我的React类的格式错误？它说应该有一个偏瘫，但我确实包括一个偏瘫吗？我可能会忘记语法格式的某些方面，尽管:(
这是我的js文件的摘录:

function App() {
  state = {
    posts = []; 
    input = '';
  };
  componentDidMount = () => {
    this.getPosts();
  };
  getPosts = () => {
    axios.get('(server)')
    // replace (server) with server link
      .then((response) => {
        const data = response.data;
        this.setState({ posts: data });
      })
  }
  displayBlogPost = (posts) => {
    if (!posts.length) return null;
    return posts.map((post, index) => (
      <div key={index} className="post__display">
        <h3>"name " + post.name </h3>
        <h3>"City " + post.location </h3>
        <h3>"Requesting " + post.type </h3>
        <h3> post.message </h3> 
      </div>
    ));
  };

  render() {
      return (
        <div className="App">
        <header> 
            <h2> Covunity </h2> 
            <SearchExample items= { this.state.posts } />
        </header>
            </div>
        <div className="gallery"> 
        {this.displayBlogPost(this.state.posts)} </div> 
    )
    document.getElementById('root')
  }
}

错误消息是

Syntax error: Unexpected token, expected ";" (54:12) 

(在render()处)

Answer 1

首先，您必须返回一个元素。而是返回2。然后，render方法实现中的最后一行是不可达的(返回之后)。尝试这个:

render() {
  return (
    <div>
      <div className="App">
        <header>
          <h2> Covunity </h2>
          <SearchExample items={this.state.posts}/>
        </header>
      </div>
      <div className="gallery">
        {this.displayBlogPost(this.state.posts)}
      </div>
    </div>
  )
  // document.getElementById('root')
}