如何在反应中使用javascipt获取条件数据？

Question

I want to load only specific number of rows where the condition satisfies.

However the following code fetches all the 25 rows and condition is not working.

Please someone help.

 loadCommentsFromServer = () => {
       fetch('/api/comments/', {
       method: 'GET',
       author: 'Dani'
   })
      .then(data => data.json())
      .then((res) => {
        if (!res.success) this.setState({ error: res.error });
        else this.setState({ data: res.data });
      });
  }

I am very new to javascript and reactjs, any help will save my weekend.

Answer 1

You don't have access to the response in your second callback there.

loadCommentsFromServer = () => {
  return fetch('/api/comments/', {
    method: 'GET',
    author: 'Dani'
  })
    .then((res) => {
      if (!res.success) this.setState({ error: res.error });
      else res.json().then(data => this.setState({ data }));
    });
}