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Typescript/Angular – Creating a child array containing specific property of Parent JSON object

February 24, 2023

I have a parent object containing the following data

[
    {
        "BEGIN_TIME": "24 Feb 2023 13:36",
        "END_TIME": "24 Feb 2023 13:37",
        ...
    },
    {
        "BEGIN_TIME": "24 Feb 2023 13:37",
        "END_TIME": "24 Feb 2023 13:38",
        ...
    },
    {
        "BEGIN_TIME": "24 Feb 2023 13:38",
        "END_TIME": "24 Feb 2023 13:39",
        ...
    }
]

I want to create an array containing specific property of a parent object.
For instance, I need all values of END_TIME property. Something like following

child_array=parent_json.Get(END_TIME);

Expected result

["24 Feb 2023 13:37","24 Feb 2023 13:38","24 Feb 2023 13:39"]

>Solution :

You can use map function

const child_array = parent_json.map(obj => obj.END_TIME);

console.log(child_array);
// Output: ["24 Feb 2023 13:37", "24 Feb 2023 13:38", "24 Feb 2023 13:39"]

Enjoy with this