How to extract XFA form field values using javascript

Question

I have created a user form using adobe livecycle designer.User need to download the pdf (XFA) form,fill it and upload the pdf. I want to extract form data in angularjs than process the data to database.I am able to do it using c# but not at client side itself using javascript.

 

I have used PDF.js, but it gives only the text content.It is not able to get the textbox and dropdownlist values using it's name.