Check if object exist in an array

Asked Jan 14 '17 at 15:08

Active Jan 14 '17 at 15:10

Viewed 39 times

I am trying to return a boolean. I have this firebase list array

{
  "users" : {
    "AsvLATYdwhg6BB8rgMKn2n" : {
      "avatar" : "httDJid_DnWXwo/photo.jpg",
      "bio" : "say something about you!"
    },
    "SFmtrI0ta5PsqYkgqZuJ" : {
      "avatar" : "https://scontent.xx.fbcdn.net/v/t1.0-1/p100x100/103_n.jpg?o",
      "bio" : "say something about you!",
    }
  }

I want to check if one of the keys exist in the array.

 _isInArray(obj, list) {
    var i;
    for (i = 0; i < list.length; i++) {
        if (list[i] === obj) {
            return true;
        }
    }

      return false;
  }

Then I run it:

 if(_isInArray(SFmtrI0ta5PsqYkgqZuJo2EG, array) {
      console.log("Is in array");
    }else {
       console.log('not in array');
     }

But it seems I am missing something. It keeps just saying (not in array).

BTW: I am using angular2. Is there is a better way of doing this in typescript , if not vanilla JavaScript is just okay.

edited Jan 14 '17 at 15:10

asked Jan 14 '17 at 15:08

LearnToday

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Just use plain TypeScript or JavaScript. There is nothing special to Angular2 – Günter Zöchbauer Jan 14 '17 at 15:09
I did the JavaScript. But I still don't get the desired result. – LearnToday Jan 14 '17 at 15:10
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/find – Günter Zöchbauer Jan 14 '17 at 15:10
check lodash a helper library to reconstruct the data's – parwatcodes Jan 14 '17 at 15:20

Check if object exist in an array

0 Answers0