Fetch with headers

问题

When use fetch for request in server using headers return

SyntaxError: Unexpected end of input
    at index.js:50
    at <anonymous>

Line of code 50 is }).then(res => res.json())

What can be wrong?

This code fetch.

fetch(api-url, {
          mode: 'no-cors',
          method: "POST",
          headers: {
              'Accept': 'application/json',
                        'Content-Type': ' application/json',
                        'X-API-SERVER': '85499f9f'
                    },
        }).then(res => res.json())
          .then(res => {
            if (res.status === 200){
              console.log("accepted");
            }else {
              console.log(res.error);
            }

             console.log(res.error)
          }).catch(err => console.log(err))

回答1:

Since you're requesting an API, you don't want to disable CORS. It's probably enough to just remove mode: 'no-cors' in your fetch request to fix this, as long as your API server sends the correct headers as well (Access-Control-Allow-Origin).

来源：https://stackoverflow.com/questions/44959749/fetch-with-headers