Is there a way to choose the final JSON element using Javascript or Google Apps Script?

Imagine if I extracted this data from a constantly updating JSON file.

[{
    "data": {
      "member": "Feufoe, Robert",
      "project": "Random Event",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "data": {
      "member": "Hefo, Talia",
      "project": "Random Event",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "data": {
      "member": "Mossler, John",
      "project": "Random Event",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "data": {
      "member": "McEvans, Nora",
      "project": "Random Event",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  }
]

When coding, I aim to access the details of the most recent entry (in this instance, belonging to Nora McEvans) while declaring various variables.

Nonetheless, the mentioned JSON file is prone to modifications. Hence, I require the script to consistently target only the final record every time.

What approach should I take?

javascriptjsongoogle-apps-script

Answer №1

To retrieve the last element in an array, simply use 

YOUR_ARRAY[YOUR_ARRAY.length - 1]
Here is an example:

var info = [{
    "info": {
      "name": "Smith, John",
      "project": "Random Task",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "info": {
      "name": "Doe, Jane",
      "project": "Random Task",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "info": {
      "name": "Brown, Emily",
      "project": "Random Task",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  },
  {
    "info": {
      "name": "Johnson, Mark",
      "project": "Random Task",
    },
    "folder": null,
    "id": 1062110,
    "spam": null
  }
];
console.log(info[info.length - 1]);

Answer №2

Here's a more concise suggestion for retrieving the last item in an Array:

const lastItem = data[data.length - 1];

This method proves to be advantageous if you appreciate minimizing keystrokes.

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