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Async Upload

In this demo, the FileUploader component is configured for asynchronous upload. Use the File types drop-down menu to select acceptable file types for the Open file dialog. The Upload mode drop-down menu allows you to specify whether the file is uploaded on a button click or instantly after the file has been selected. In addition, you can specify whether the FileUploader allows multiple file selection.

Backend API
$(() => { const fileUploader = $('#file-uploader').dxFileUploader({ multiple: false, accept: '*', value: [], uploadMode: 'instantly', uploadUrl: 'https://js.devexpress.com/Demos/NetCore/FileUploader/Upload', onValueChanged(e) { const files = e.value; if (files.length > 0) { $('#selected-files .selected-item').remove(); $.each(files, (i, file) => { const $selectedItem = $('<div />').addClass('selected-item'); $selectedItem.append( $('<span />').html(`Name: ${file.name}<br/>`), $('<span />').html(`Size ${file.size} bytes<br/>`), $('<span />').html(`Type ${file.type}<br/>`), $('<span />').html(`Last Modified Date: ${file.lastModifiedDate}`), ); $selectedItem.appendTo($('#selected-files')); }); $('#selected-files').show(); } else { $('#selected-files').hide(); } }, }).dxFileUploader('instance'); $('#accept-option').dxSelectBox({ inputAttr: { 'aria-label': 'Accept Option' }, dataSource: [ { name: 'All types', value: '*' }, { name: 'Images', value: 'image/*' }, { name: 'Videos', value: 'video/*' }, ], valueExpr: 'value', displayExpr: 'name', value: '*', onValueChanged(e) { fileUploader.option('accept', e.value); }, }); $('#upload-option').dxSelectBox({ items: ['instantly', 'useButtons'], value: 'instantly', inputAttr: { 'aria-label': 'Upload Option' }, onValueChanged(e) { fileUploader.option('uploadMode', e.value); }, }); $('#multiple-option').dxCheckBox({ value: false, text: 'Allow multiple files selection', onValueChanged(e) { fileUploader.option('multiple', e.value); }, }); });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.3/css/dx.light.css" /> <script src="js/dx.all.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="fileuploader"> <div class="widget-container"> <div id="file-uploader"></div> <div class="content" id="selected-files"> <div> <h4>Selected Files</h4> </div> </div> </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>File types</span> <div id="accept-option"></div> </div> <div class="option"> <span>Upload mode</span> <div id="upload-option"></div> </div> <div class="option"> <div id="multiple-option"></div> </div> </div> </div> </div> </body> </html>
.widget-container { margin-right: 320px; } .content h4 { margin-bottom: 10px; font-weight: 500; font-size: 18px; } .content { margin-top: 50px; margin-left: 10px; } .selected-item { margin-bottom: 20px; } #selected-files { display: none; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; right: 0; top: 0; bottom: 0; width: 260px; } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; }

To select files, click the Select file button or drop the files directly on the component. If the upload mode is «useButtons», you must click the Upload button or a corresponding button for each file to initiate upload.

NOTE

This demo does not actually upload files. To upload files, assign the URL of a page providing server scenarios for saving uploaded files to the uploadUrl configuration property of the component.