Business
Jobs
  • About Us
  • Solutions
    • Job Postings
      Post your job and receive qualified candidates in 48h.
    • Candidate Assessments
      500+ technical and psychological tests, plus anti-fraud.
    • Headhunting
      Tailor-made executive search from start to finish.
    • Payroll + EOR
      Payroll dispersal and EOR across 15+ LATAM countries.
  • Pricing
  • Jobs

0

165
Views
useeffect function fetch multiple data

I am trying to fetch data from an API from an input. After providing the input and calling the data, I am getting two fetch call from same data. here is the code of input:


  const [countryName, setCountryName] = useState<string>("");

  const handleInputChange = (event: {
    target: { value: React.SetStateAction<string> };
  }) => {
    setCountryName(event.target.value);
  };

  const onSubmit = () => {
    navigate(`/country/${countryName}`);
  };

<TextField
          variant="standard"
          placeholder="Enter country Name"
          value={countryName}
          onChange={handleInputChange}
        />

Here I am using the input to fetch the data:

const { name } = useParams();

  const [loading, setLoading] = useState<boolean>(false);

  const [country, setCountry] = useState<InitCountry>();

  useEffect(() => {
    const getCountry = async () => {
      setLoading(true);

      const response = await fetch(
        `https://restcountries.com/v3.1/name/${name}`
      );
      const data = await response.json();
      console.log(data);
      setCountry(data.length > 1 ? data[2] : data[0]);

      setLoading(false);
    };
    getCountry();
  }, [name]);

What am I doing wrong here?

about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

Your setup seems good, but the root cause is possibly from React.StrictMode

Strict mode can’t automatically detect side effects for you, but it can help you spot them by making them a little more deterministic. This is done by intentionally double-invoking the following functions: ...

This effect is only in development which means it won't happen in your production, but if you don't want intentionally double-invoking, you can remove it from your code.

about 4 years ago · Juan Pablo Isaza Report
Answer question
Find remote jobs

Discover the new way to find a job!

Top jobs
Top job categories
Business
Post vacancy Pricing Sales
Legal
Terms and conditions Privacy policy
© 2026 PeakU Inc. All Rights Reserved.
Andres GPT
Show me some job opportunities
There's an error!