Create new array from existing array with specifc node values

Question

I have following array:

[
  {
    fileName: "test.pdf",
    fileUrl: "https://test-url1.com/test.pdf",
    isDeleted: true
  },
  {
    fileName: "test.pdf",
    fileUrl: "https://test-url1.com/test.pdf",
    isDeleted: true
  }
]

Now I need to create new array from this array which will contain only fileUrl data.

So that new array will have only fileUrl node and all it's links.

Should I use map OR filter method, or any other suggestion for this.

Thanks

please add a code snippet instead of code screenshots – Haris Bouchlis Mar 02 '23 at 10:28 — Haris Bouchlis, Mar 02 '23 at 10:28

Haris Bouchlis · Accepted Answer · 2023-03-02T10:37:03.127

2

You should use map for this.

const urlArray = array.map((item: any) => item.fileUrl);

// [ "https://test-url1.com/test.pdf", "https://test-url1.com/test.pdf"]

The rule of thumb is if you want to change the structure of the array you use map, if you want to get a subset of the array you use filter.

edited Mar 02 '23 at 10:37

answered Mar 02 '23 at 10:32

Haris Bouchlis

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I tried it but I am getting this error : 'item' is of type 'unknown'.ts(18046) – Sam Mar 02 '23 at 10:36

Create new array from existing array with specifc node values

1 Answers1