Fetch() POST REQUEST V

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#1

in the task 7 of our lesson when i make my self url in the inputField to be shorten but the program execute the url which i assign in the const url for instance when i make " Idiot question: when to use ';' and when not - #5 by 2timit" the executer shorten url which run is "Your shortened url is:

rebrand.ly/kbcz1n6" I don’t know why and this is my code :

// Information to reach API
const apiKey = '';
const url = 'https://api.rebrandly.com/v1/links';

// Some page elements
const inputField = document.querySelector('#input');
const shortenButton = document.querySelector('#shorten');
const responseField = document.querySelector('#responseField');

// AJAX functions
const shortenUrl = () => {
  const urlToShorten = inputField.value;
  const data = JSON.stringify({destination: urlToShorten});
  fetch(url, {method: 'POST', headers: {
    'Content-type': 'application/json',
    'apikey': apiKey
  }, body: data}).then(response => {
   if(response.ok) {
     return response.json()
   } 
   throw new Error('Request failed!')
  }, networkError => {
    console.log(networkError.message)
  }).then(jsonResponse => {
    renderResponse(jsonResponse)
  })
}

// Clear page and call AJAX functions
const displayShortUrl = (event) => {
  event.preventDefault();
  while(responseField.firstChild){
    responseField.removeChild(responseField.firstChild)
  }
  shortenUrl();
}

shortenButton.addEventListener('click', displayShortUrl);
Fetch() POST REQUEST V