How can i get all values of a particular key from object array without loop in angular

Question

[{"time":"2016-07-26 09:02:27","type":"aa"},
{"time":"2016-04-21 20:35:07","type":"ae"},
{"time":"2016-08-20 03:31:57","type":"ar"},
{"time":"2017-01-19 22:58:06","type":"ae"},
{"time":"2016-08-28 10:19:27","type":"ae"},
{"time":"2016-12-06 10:36:22","type":"ar"},
{"time":"2016-07-09 12:14:03","type":"ar"},
{"time":"2016-10-25 05:05:37","type":"ae"},
{"time":"2016-06-05 07:57:18","type":"ae"},
{"time":"2016-10-08 22:03:03","type":"aa"},
{"time":"2016-08-13 21:27:37","type":"ae"},
{"time":"2016-04-09 07:36:16","type":"ar"},
{"time":"2016-12-30 17:20:08","type":"aa"},
{"time":"2016-03-11 17:31:46","type":"aa"},
{"time":"2016-05-04 14:08:25","type":"ar"},
{"time":"2016-11-29 05:21:02","type":"ar"},
{"time":"2016-03-08 05:46:01","type":"ar"},
]

here I want only type key all values

like that Please help me to do so thanks in advance to all.

You can't do that without looping through the array. But if you are looking for some specific use-case, please add your use-case as well. — Adithya Sreyaj
– Adithya Sreyaj, Commented Nov 24, 2021 at 8:52
Use Array#map: myArray.map(item => item.type). Note that the array is still being implicitly looped. — Barremian
– Barremian, Commented Nov 24, 2021 at 8:57

Haris Bouchlis · Accepted Answer · 2021-11-24 09:27:55Z

Simplest way would be to use Array.map method like so:

let array = [{"time":"2016-07-26 09:02:27","type":"aa"},
  {"time":"2016-04-21 20:35:07","type":"ae"},
  {"time":"2016-08-20 03:31:57","type":"ar"},
  {"time":"2017-01-19 22:58:06","type":"ae"},
  {"time":"2016-08-28 10:19:27","type":"ae"},
  {"time":"2016-12-06 10:36:22","type":"ar"},
  {"time":"2016-07-09 12:14:03","type":"ar"},
  {"time":"2016-10-25 05:05:37","type":"ae"},
  {"time":"2016-06-05 07:57:18","type":"ae"},
  {"time":"2016-10-08 22:03:03","type":"aa"},
  {"time":"2016-08-13 21:27:37","type":"ae"},
  {"time":"2016-04-09 07:36:16","type":"ar"},
  {"time":"2016-12-30 17:20:08","type":"aa"},
  {"time":"2016-03-11 17:31:46","type":"aa"},
  {"time":"2016-05-04 14:08:25","type":"ar"},
  {"time":"2016-11-29 05:21:02","type":"ar"},
  {"time":"2016-03-08 05:46:01","type":"ar"},
]

array = array.map(i => i.type);
// ["ae", "ar", ...]

array = array.map(i => {return { type: i.type }})
// [ {"type": "ae"}, {"type": "ar"}, ... ]

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