Javascript: find array by name -


I have some JS arrays and I want to find an array by name. For example: 

  arr1 = [1,2,3]; Arr2 = [3,4,5];

and access them like this: 

  var intNum = 2; Var arrName = 'arr' + intNum; ArrName [0]; // equal 3

Is this possible?

Thank you, Kevin 

  window ['arr' + intNum] Such as  
  arr1 = [1,2,3]; Arr2 = [3,4,5]; IntNum = 2; Warning (window ['arrival' + intNum] [1]); // Alert 4

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