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Groups > comp.lang.javascript > #33585

Re: Find object in array

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Martin Honnen wrote:
> On 16.07.2017 11:00, Andrew Poulos wrote:
>> The server returns a string which I parse. It becomes an array of 
>> "simple" objects eg.
>> {
>>    "id":1,
>>    "colour": "#fff",
>>    "width": 320,
>>    "height":240
>> }
>>
>> To find an object with a specific "id" I use a for loop on the array. 
>> This is ok but now the arrays I'm getting contain 10s of objects. What 
>> better way can I use to find a specific object?
> 
> If you have an array "a" and want to find items meeting a specific 
> condition then you can use
>    a.filter(o => o.id == 1)
> to get an array of those objects meeting the filter condition.
> 
> var a = [{id: 1, data: 'foo'}, {id: 2, data: 'bar'}, {id:1, data: 'baz'}];
> a.filter(o => o.id == 1)

Great!

Another possibility is the find() method [1]:

a.find(el => el.id === 1);

[1] 
<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find>


-- 
Joao Rodrigues

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Thread

Find object in array Andrew Poulos <ap_prog@hotmail.com> - 2017-07-16 19:00 +1000
  Re: Find object in array Martin Honnen <martin.honnen@gmx.de> - 2017-07-16 11:11 +0200
    Re: Find object in array JR <jrfaqcom@gmail.com> - 2017-07-17 12:47 -0300
      Re: Find object in array Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-07-17 20:06 +0200
  Re: Find object in array Andrew Poulos <ap_prog@hotmail.com> - 2017-07-16 19:14 +1000
    Re: Find object in array Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-07-17 01:30 +0200
  Re: Find object in array Dr J R Stockton <J.R.Stockton@physics.org> - 2017-07-16 15:13 -0700
    Re: Find object in array Andrew Poulos <ap_prog@hotmail.com> - 2017-07-17 14:49 +1000
      Re: Find object in array "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-07-17 13:53 +0200
        Re: Find object in array Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-07-17 14:29 +0100
  Re: Find object in array JR <jrfaqcom@gmail.com> - 2017-07-18 13:02 -0300

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