How to convert [{"tag":"google","count":1},{"tag":"microsoft","count":2}] to something like: {"google":1, "microsoft":2} in typescript

Question

How to convert:

[
    {
        "tag":"google",
        "count":1
    },
    {
        "tag":"microsoft",
        "count":2
    }
]

to something like:

{
    "google":1,
    "microsoft":2
}

in typescript using built in function or any shortcut?

`arr.reduce((a, { tag, count }) => Object.assign(a, { [tag]: count }), {})` — CertainPerformance, Jun 16 '18 at 11:15
What's 'a' and 'arr' here? I am new to this, your help is really appreciated. — Saurabh Srivastava, Jun 16 '18 at 11:20
I tried to do: ```hashtags.forEach((hashtag) => hashtagsArray.push(hashtag.tag + ':' + hashtag.count));``` — Saurabh Srivastava, Jun 16 '18 at 11:33
But when I am simply applying the given solution, it doesn't work. Am I doing something wrong? — Saurabh Srivastava, Jun 16 '18 at 11:34
try `hashtags.forEach((hashtag) => hashtagsArray.push({ [hashtag.tag]:hashtag.count }));` — Ritwick Dey, Jun 16 '18 at 12:25
Possible duplicate of [Access / process (nested) objects, arrays or JSON](https://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json) — Liam, Jun 28 '18 at 13:41

score -2 · Accepted Answer · answered Jun 16 '18 at 12:09

-2

var arr=[
    {
        "tag":"google",
        "count":1
    },
    {
        "tag":"microsoft",
        "count":2
    }
];
var k=arr.reduce((a, { tag, count }) => Object.assign(a, { [tag]: count }), {});
console.log(k);

CertainPerformnce meant this.

answered Jun 16 '18 at 12:09

Praveen Ojha

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How to convert [{"tag":"google","count":1},{"tag":"microsoft","count":2}] to something like: {"google":1, "microsoft":2} in typescript

1 Answers1