How to implement Auto-Increment number using javascript

Question

Hello C# Corner,

How to Increment Letters and Number Combinations MFA/2017/0001 becomes MFA/2017/0002, MFA/2017/0003; The auto generated code appear on  

<div class="input-control text full-size">
<input name="Folio_x0020_Number" type="text" id="Folio_x0020_Number" value="">
</div> 

 

Please anybody with javascript code or refernces material!

 

thanks

Beavon