这是带有注释的基本示例。该
upload功能是您要寻找的：
// Select your input type file and store it in a variableconst input = document.getElementById('fileinput');// This will upload the file after having read itconst upload = (file) => { fetch('http://www.example.net', { // Your POST endpoint method: 'POST', headers: { // Content-Type may need to be completely **omitted** // or you may need something "Content-Type": "You will perhaps need to define a content-type here" }, body: file // This is your file object }).then( response => response.json() // if the response is a JSON object ).then( success => console.log(success) // Handle the success response object ).catch( error => console.log(error) // Handle the error response object );};// Event handler executed when a file is selectedconst onSelectFile = () => upload(input.files[0]);// Add a listener on your input// It will be triggered when a file will be selectedinput.addEventListener('change', onSelectFile, false);
