javascript - event listen for click in HTML getting the value -

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Trying to reprogram a calculator using Event Listener because this code should be better overall.

and here is the code 

  
  
 code> var input = document.getElementById ("calculator"). AddEventListener ("click", Calc); Function calc (a) {input = this.a; Console.log (input); }   
 Thank you for your time   
 
 
 you want something like this I thought that  calc  is near  event  item, through which you can take the price.  
  function calc (a) {var input = A.target console.log (input.value); }   
 Edit:  
 After looking at Bella,  calculator  turned out to be a div, do not know what you try to achieve are doing .

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