Fetch in react

React get method

/* React get method.  */

componentWillMount(){
    fetch('/getcurrencylist',
    {
        /*
        headers: {
          'Content-Type': 'application/json',
          'Accept':'application/json'
        },
        */
        method: "get",
        dataType: 'json',
    })
    .then((res) => res.json())
    .then((data) => {
      var currencyList = [];
      for(var i=0; i< data.length; i++){
        var currency = data[i];
        currencyList.push(currency);
      }
      console.log(currencyList);
      this.setState({currencyList})
      console.log(this.state.currencyList);
    })
    .catch(err => console.log(err))
  }

Fetch react

// React fetch with useEffect
 
 useEffect(() => {
    const fetchApi = async () => {
      const response = await fetch(
        `http://api.openweathermap.org/data/2.5/weather?q=${search}&appid=4ea8f345f660789c426b1282d9a41f67`
      );
      const resJson = await response.json();
      setCity(resJson.main);
    };
    fetchApi();
  }, [search]);

Fetch in react

React.useEffect(function() {
        console.log("Effect ran")
        fetch("https://swapi.dev/api/people/1")
            .then(res => res.json())
            .then(data => setStarWarsData(data))
    }, [])

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