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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
(function () { var output = document.getElementById('output'); document.getElementById('upload').onclick = function () { var data = new FormData(); data.append('foo', 'bar'); data.append('file', document.getElementById('file').files[0]); var config = { onUploadProgress: function(progressEvent) { var percentCompleted = Math.round( (progressEvent.loaded * 100) / progressEvent.total ); console.log(percentCompleted) } }; axios.put('/upload/server', data, config) .then(function (res) { output.className = 'container'; output.innerHTML = res.data; }) .catch(function (err) { output.className = 'container text-danger'; output.innerHTML = err.message; }); }; })(); But if I download the axios examples repo and install the necessary dependencies the callback function, onUploadProgress no longer works as expected. It only fires onUploadProgress once with "100".https://github.com/axios/axios/tree/master/examples