Created
May 2, 2016 17:08
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Simple fetch file uploader with file input and dropzone
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title></title> | |
| <script type="text/javascript" src="uploader.js"></script> | |
| <style media="screen"> | |
| .dropzone { | |
| padding:40px; | |
| background-color:silver; | |
| transition: background-color 400ms; | |
| } | |
| .dropzone--active { | |
| background-color: blue; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <!-- Uploader start --> | |
| <div data-file-upload="/upload" class="dropzone"> | |
| <input type="file" multiple="multiple"> | |
| </div> | |
| <!-- Uploader end --> | |
| </body> | |
| </html> | |
| <script type="text/javascript"> | |
| document.addEventListener("DOMContentLoaded", function(event) { | |
| var fileUploadWrappers = document.querySelectorAll("[data-file-upload]"); | |
| Array.prototype.forEach.call(fileUploadWrappers, function(fileUploadWrapper) { | |
| fileUploadWrapper.addEventListener("uploadsucess", function(event){ | |
| console.log("Success", event); | |
| }); | |
| fileUploadWrapper.addEventListener("uploadfailed", function(event){ | |
| console.log("Failed", event); | |
| }); | |
| }); | |
| }); | |
| </script> |
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| document.addEventListener("DOMContentLoaded", function(event) { | |
| var fileUploadWrappers = document.querySelectorAll("[data-file-upload]"); | |
| var uploadFile = function(fileUploadWrapper, url, file) { | |
| fetch(url, { | |
| method: 'POST', | |
| body: file, | |
| headers: { | |
| "X-Filename": file.name | |
| } | |
| }).then(function(response){ | |
| if (!response.ok) { | |
| throw response; | |
| } | |
| var ev = new Event("uploadsucess"); | |
| ev.file = file; | |
| fileUploadWrapper.dispatchEvent(ev); | |
| }).catch(function(){ | |
| var ev = new Event("uploadfailed"); | |
| ev.file = file; | |
| fileUploadWrapper.dispatchEvent(ev); | |
| }); | |
| }; | |
| var uploadFiles = function(fileUploadWrapper, url, files) { | |
| Array.prototype.forEach.call(files, function(file) { | |
| uploadFile(fileUploadWrapper, url, file); | |
| }); | |
| }; | |
| Array.prototype.forEach.call(fileUploadWrappers, function(fileUploadWrapper) { | |
| var fileInput = fileUploadWrapper.querySelector('input[type="file"]'); | |
| var url = fileUploadWrapper.dataset.fileUpload; | |
| fileUploadWrapper.addEventListener('drop', function(event) { | |
| event.preventDefault(); | |
| uploadFiles(fileUploadWrapper, url, event.dataTransfer.files); | |
| }); | |
| fileUploadWrapper.addEventListener('dragover', function(event) { | |
| // prevent to make drop work | |
| event.preventDefault(); | |
| }); | |
| fileUploadWrapper.addEventListener('dragenter', function(event) { | |
| event.preventDefault(); | |
| fileUploadWrapper.classList.add('dropzone--active'); | |
| }); | |
| fileUploadWrapper.addEventListener('dragleave', function(event) { | |
| console.log(event); | |
| event.preventDefault(); | |
| fileUploadWrapper.classList.remove('dropzone--active'); | |
| }); | |
| fileInput.addEventListener('change', function(){ | |
| uploadFiles(fileUploadWrapper, url, fileInput.files); | |
| }); | |
| }); | |
| }); |
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