ES7 has only two features



ES7 features:
  1. Array.prototype.includes - if you declare 
       var a = [1, 2, 3]
    a.includes(1); True 
    a.includes(1, 0); True 
    a.includes(1, 2) 
    
   The second parameter is fromIndex - which ask it to start seeking after certain no of position.


  1. Exponentiation Operator ** - example 4 ** 9 = 262144

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