RosettaCodeData/Task/Search-a-list/JavaScript/search-a-list-4.js

{
  "first": [
    [
      "bush",
      4
    ],
    [
      "washington",
      "Error: not found"
    ]
  ],
  "last": [
    [
      "bush",
      7
    ],
    [
      "washington",
      "Error: not found"
    ]
  ]
}