Created
June 26, 2022 16:30
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Code from Video about Uploading Multiple Files with Fetch
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| document.addEventListener('DOMContentLoaded', () => { | |
| document.getElementById('inputFile').addEventListener('change', filesPicked); | |
| // document.getElementById('btnToggle').addEventListener('click', toggleInput); | |
| // document.getElementById('btnPick').addEventListener('click', askForFiles); | |
| // document.getElementById('btnInfo').addEventListener('click', showFileInfo); | |
| }); | |
| function filesPicked(ev) { | |
| //any time one or more files are picked in the file picker dialog | |
| let input = ev.target; | |
| let files = input.files; | |
| console.log({ files }); | |
| if (files.length > 0) { | |
| showFileInfo(ev); | |
| //upload a file or file(s) to a web server/api | |
| let url = 'https://jsonplaceholder.typicode.com/users'; | |
| // let h = new Headers(); | |
| // h.append('content-type', files[0].type); | |
| // h.append('content-length', files[0].size); | |
| // "Content-disposition": "Multipart/Form-Data;boundary=--asdlkasjdflksdjflkds" | |
| let fd = new FormData(); | |
| fd.append('name', 'Steve'); | |
| for (let i = 0, len = files.length; i < len; i++) { | |
| fd.append(`files-${i}`, files[i], files[i].name); | |
| } | |
| let request = new Request(url, { | |
| body: fd, | |
| // headers: h, | |
| mode: 'no-cors', | |
| method: 'POST', | |
| }); | |
| fetch(request) | |
| .then((response) => { | |
| console.log(response.status, response.statusText); | |
| }) | |
| .catch(console.warn); | |
| } | |
| } | |
| function toggleInput(ev) { | |
| //hide or show the <input type="file"> | |
| ev.preventDefault(); | |
| let control = document.getElementById('inputFile').parentElement; | |
| //we want to apply this class to the parent | |
| control.classList.toggle('hidden'); | |
| } | |
| function askForFiles(ev) { | |
| //open the file picker dialog | |
| ev.preventDefault(); | |
| let control = document.getElementById('inputFile'); | |
| control.click(); | |
| } | |
| function showFileInfo(ev) { | |
| if (ev.type == 'click') ev.preventDefault(); | |
| //loop through all the files in the filelist | |
| //and display the name, size, type, and lastModified date | |
| let files = document.getElementById('inputFile').files; | |
| let len = files.length; | |
| for (let i = 0; i < len; i++) { | |
| console.group(); | |
| console.log(files[i].name); | |
| console.log(files[i].size); | |
| console.log(files[i].type); | |
| console.log(files[i].lastModified); | |
| console.groupEnd(); | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> | |
| <meta name="viewport" content="width=device-width,initial-scale=1.0" /> | |
| <link rel="stylesheet" href="style.css" /> | |
| <script src="files.js" defer></script> | |
| <title>File and FileList</title> | |
| </head> | |
| <body> | |
| <header> | |
| <h1>File and FileList (and fetch too)</h1> | |
| </header> | |
| <main> | |
| <h2>Gather Your Files</h2> | |
| <form name="myform" id="myform" action="#"> | |
| <p> | |
| <label>Pick Files</label> | |
| <input | |
| type="file" | |
| id="inputFile" | |
| multiple | |
| accept="application/json,.json,text/json" | |
| /> | |
| </p> | |
| <!-- | |
| text/html,.html,text/xml,.xml | |
| text/css,.css | |
| application/json,.json,text/json | |
| image/*,.png,.jpg,.gif,.webp,image/jpeg,image/gif,image/webp,image/png | |
| --> | |
| <!-- <p><button id="btnToggle">Toogle File Input</button></p> | |
| <p><button id="btnPick">Pick Files</button></p> | |
| <p><button id="btnInfo">Show File Info</button></p> --> | |
| </form> | |
| </main> | |
| <footer> | |
| <p>© 2022</p> | |
| </footer> | |
| <!-- | |
| Images from | |
| https://unsplash.com/@dorographie | |
| https://unsplash.com/photos/0o_GEzyargo | |
| --> | |
| </body> | |
| </html> |
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| * { | |
| box-sizing: border-box; | |
| font: inherit; | |
| } | |
| html { | |
| font-size: 20px; | |
| font-family: sans-serif; | |
| margin: 0; | |
| } | |
| body { | |
| margin: 0; | |
| } | |
| header { | |
| padding: 1rem 3rem; | |
| background-color: coral; | |
| color: white; | |
| border-bottom: 1px solid #000; | |
| } | |
| :is(main, footer) { | |
| padding: 1rem 3rem; | |
| } | |
| header h1 { | |
| font-size: 2rem; | |
| } | |
| form { | |
| padding: 0 4rem; | |
| } | |
| .hidden { | |
| opacity: 0; | |
| height: 0; | |
| line-height: 0; | |
| overflow: hidden; | |
| padding: 0; | |
| margin: 0; | |
| } | |
| footer img { | |
| width: 300px; | |
| } |
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