Preparation code

<script>
  var arr1 = [];
  arr1[100000000] = "rubbish";
  
  var arr2 = ["value"];
  
  var obj = {
   "100000000": "value"
  };
  
  var ret;
</script>

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ret = arr1[100000000];

ret = arr2[0];

ret = obj[100000000];

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