title: how to add input field dynamically when user click on button in react.js
body: <p>I have two Question -&gt;</p>
  <p>First one is I want to add user input field dynamically when user click &quot;+&quot; button in react.js. And if user click more times then more number of field add to the form. How to do this in react.js?</p>
  <p>Second one when user change its value I want to store their corresponding value of each input field into my component state variable. Now here how I add their value, what data structure I use array or object or something else ? and how ?</p>