js axios progress
upload(files) { const config = { onUploadProgress: function(progressEvent) { var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total) console.log(percentCompleted) } } let data = new FormData() data.append('file', files[0]) axios.put('/endpoint/url', data, config) .then(res => console.log(res)) .catch(err => console.log(err)) }