Fetch react

Js fetch 'post' json

//Obj of data to send in future like a dummyDb
const data = { username: 'example' };

//POST request with body equal on data in JSON format
fetch('https://example.com/profile', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(data),
})
.then((response) => response.json())
//Then with the data from the response in JSON...
.then((data) => {
  console.log('Success:', data);
})
//Then with the error genereted...
.catch((error) => {
  console.error('Error:', error);
});

//																		Yeah

Source: developer.mozilla.org

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

var formData = new FormData();
var fileField = document.querySelector("input[type='file']");

formData.append('username', 'abc123');
formData.append('avatar', fileField.files[0]);

fetch('https://example.com/profile/avatar', {
  method: 'PUT',
  body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', response));

Source: developer.mozilla.org

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))
    }, [])

Similar codes

1 vote174 views1 answer
React native flatlist horizontal scroll
Javascript React
16 votes180 views1 answer
DangerouslySetInnerHTML did not match error in React
Javascript React
140 votes273 views3 answers
React.js installation
Javascript React
0 vote175 views1 answer
Mdn react
Javascript React
3 votes177 views2 answers
React native pm ERR! code EINTEGRITY
Javascript React
0 vote206 views1 answer
React native get route name
Javascript React
48 votes209 views6 answers
Comment in react
Javascript React
0 vote171 views1 answer
Inline style to change background color react
Javascript React
0 vote172 views1 answer
React actions sintaxe
Javascript React
2 votes237 views2 answers
Prevent a page from refreshing in react
Javascript React