HTML display result in text (input) field?

Question

I have a simple HTML form, with 3 input field, when you hit = button, it suppose to add 2 numbers that you typed in the first 2 input fields and display result in 3rd filed.

Answer 1

With .value and INPUT tag

  
    

    
  

  
    

       + 
      
      
      
    

  

with innerHTML and DIV

  
    

    
  

  
    

       +