Javascript 检索访问令牌RedditAPI

Javascript 检索访问令牌RedditAPI,javascript,reactjs,fetch,reddit,Javascript,Reactjs,Fetch,Reddit,我正在查看RedditAPI,并遵循指南获取访问\u令牌 我的守则如下: componentDidMount() { const code = '12345'; let headers = new Headers(); headers.set('Authorization', 'Basic ' + (CLIENT_ID + ":" + CLIENT_SECRET)); fetch('https://www.reddit.com/api/v1/access_token',

我正在查看RedditAPI,并遵循指南获取
访问\u令牌

我的守则如下:

componentDidMount() {

  const code = '12345';
  let headers = new Headers();
  headers.set('Authorization', 'Basic ' + (CLIENT_ID + ":" + CLIENT_SECRET));

    fetch('https://www.reddit.com/api/v1/access_token', {
      method: 'post',
      headers,
      body: JSON.stringify({
        grant_type: 'authorization_code',
        code,
        redirect_uri: 'http://localhost:3000'
      })
    });
  }
}
这将返回一个
401
错误,如果我删除了标题,它将卡在
200个选项上

有人能看出我做错了什么吗