Javascript upload chuncking

We need a form which includes a 2 text fields, 4 file input fields that can submit the data and chunk all the files into small pieces and is stored in a custom temp folder which is then moved to a main folder after upload. It needs to be automated and smooth, xHr/ajax. We also wants a progress bar so if possible one of those and don't use move_uploaded_file as server does not like it. More of this: $fileData = file_get_contents('php://input'); //Write the actual chunk $handle = fopen($this->tempDirectory . $this->tmpName, 'a'); fwrite($handle, $fileData); fclose($handle); etc. but javascript is most important, that is what i am struggling with bits) - any examples of libraries u know would be great. not just names, actual codepen/jsfiddle examples with the working js for the forms with 2 text fields and 4 file input fields and a submit button I tried blueimp php code which has move_uploaded_file and it did not work but if they can just do js that would be great, but if they wanna do php as well that would be even more helpful php doesn't have to be secure, i can do that afterwards