javascript array remove every other element : i'm looking for a way to remove array other elements.
but i don't know how to do it.

this is my array: 
```
musics: [
          {
            id: 1,
            cover: require('~/assets/images/cover/music/ali_zand_vakili_jadeh_shab.jpg'),
            title: 'جاده شب',
            artist: 'علی زند وکیلی',
            source: 'http://media.mtvpersian.net/2019/Mar/21/Ali%20Zand%20Vakili%20-%20Jadeh%20Shab.mp3'
          },
          {
            id: 2,
            cover: require('~/assets/images/cover/music/amin_hayaei_divoone_misazi.jpg'),
            title: 'دیوونه میسازی',
            artist: 'امین حیایی',
            source: 'https://cdnmrtehran.ir/media/mp3s_128/Amin_Hayaei/Singles/amin_hayaei_divoone_misazi.mp3'
          },
          {
            id: 3,
            cover: require('~/assets/images/cover/music/emad_talebzadeh_maghrour.jpg'),
            title: 'مغرور',
            artist: 'عماد طالب زاده',
            source: 'https://cdnmrtehran.ir/media/mp3s_128/Emad_Talebzadeh/Singles/emad_talebzadeh_maghrour.mp3'
          },
          {
            id: 4,
            cover: require('~/assets/images/cover/music/farzad_farzin_jazzab.jpg'),
            title: 'جذاب',
            artist: 'فرزاد فرزین',
            source: 'https://cdnmrtehran.ir/media/mp3s_128/Farzad_Farzin/Singles/farzad_farzin_jazzab.mp3'
          },
          {
            id: 5,
            cover: require('~/assets/images/cover/music/hamid_sefat_ajayeb_shahr_merat_remix.jpg'),
            title: 'عجایب شهر رمیکس',
            artist: 'حمید صفت',
            source: 'https://cdnmrtehran.ir/media/mp3s_128/Hamid_Sefat/Singles/hamid_sefat_ajayeb_shahr_merat_remix.mp3'
          }
        ],
```

how to remove all elements except element with id of 3 ?