Accessing a counter in a variable name in Javascript (code inside) -

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I am trying to do something similar to the following PHP code but in javascipt: 

   
 After reaching the loop number basically, the following is messy with 0, if less than 10 but I do not know syntax in JS to do this: ( 
 Sorry for the noob style   
 
 
 I think that you have zero to zero Instead a leading zero means ...  
 You can use conditional operators for example:  
  (n <10 '' 0 ':' ') + N   
 You can do a general question The function function also implements:  
  function pad left (str, len, ch) {while (str.length & lt; len) str = ch + str; return str;}  For example:  
  var value = obj ['entry' + (n <10 '' 0 '')  
: '') + N + '_cash'];   
 If  n  contains  4 , then this  Obj.entry04_cash .

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