javascript - Filter array to unique objects by object.property -

what trying achieve filtering of objects array array of objects unique actors.

so have:

var objects = [{      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec46234",        name: "name",        openid: null      },      capture: 'value'    },    {      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec12345",        name: "name2",        openid: null      },      capture: 'value2'    },    {      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec46234",        name: "name",        openid: null      },      capture: 'value3'    }  ];      objects.filter((value, index, self) => {    return self.indexof(value) === index;  }).map(ele => {    console.log(ele.capture);  });

but can see, @ moment not filter of array elements.

at first thought return self.indexof(value.value) === index; solve issue, returns empty array.

the desired outcome array not consist of last array element actor property matches first array element.

the expected result is:

[{     actor: {       account: null,       degraded: false,       mbox: null,       mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec46234",       name: "name",       openid: null     },     capture: 'value'   },   {     actor: {       account: null,       degraded: false,       mbox: null,       mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec12345",       name: "name2",       openid: null     },     capture: 'value2'   } ]; 

the objects in array different objects, if happen have properties same values. .indexof() function comparing references, not property values.

also, in practice, none of 3 objects have identical properties because have different .capture value.

use .findindex() instead of .indexof(), can compare properties find matching objects:

objects.filter((value, index, self) => {   return self.findindex(v => v.actor.name === value.actor.name) === index; }) 

here i'm using .actor.name property, of course compare additional properties if needed.

(note .findindex() es6 function, assume that's fine given code using arrow functions. or can polyfill it.)

var objects = [{      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec46234",        name: "name",        openid: null      },      capture: 'value'    },    {      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec12345",        name: "name2",        openid: null      },      capture: 'value2'    },    {      actor: {        account: null,        degraded: false,        mbox: null,        mbox_sha1sum: "843c56da78f9eb888274d2d4e12ab1d748ec46234",        name: "name",        openid: null      },      capture: 'value3'    }  ];      objects.filter((value, index, self) => {    return self.findindex(v => v.actor.name === value.actor.name) === index;  }).map(ele => {    console.log(ele.capture);  });