eu tenho a seguinte lista de objetos porem preciso filtrar apenas o user…
let msg = [{ _id: 5cef45879e78602774e921d0, to: '5ce82f0deee6dc458a20b21e', from: '5ce82f0deee6dc458a20b21e', text: '5', type: 'text', user: { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.2', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559184735135 }, channel: '/geral', createdAt: 1559184775656 }, { _id: 5cef45789e78602774e921cf, to: '5ce82f0deee6dc458a20b21e', from: '5ce82f0deee6dc458a20b21e', text: '4', type: 'text', user: { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.2', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559184735135 }, channel: '/geral', createdAt: 1559184760319 }, { _id: 5cef406c52c9ec1e37065be7, to: '5ce82f0deee6dc458a20b21e', from: '5ce82f0deee6dc458a20b21e', text: '3', type: 'text', user: { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, channel: '/geral', createdAt: 1559183468769 }, { _id: 5cef406952c9ec1e37065be6, to: '5ce82f0deee6dc458a20b21e', from: '5ce82f0deee6dc458a20b21e', text: '2', type: 'text', user: { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, { _id: 5cef406352c9ec1e37065be5, to: '5ce82f0deee6dc458a20b21e', from: '5ce82f0deee6dc458a20b21e', text: '1', type: 'text', user: { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, channel: '/geral', createdAt: 1559183459121 } ] Então rodei let x = msg.map(res => res.user) dai consegui.. { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.2', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559184735135 }, { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.2', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559184735135 }, { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, Depois rodei esse codigo para tirar os repetidos…
let unic = x.filter(function (a) { return !this[JSON.stringify(a)] && (this[JSON.stringify(a)] = true); }, Object.create(null)) Recebi :
[ { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.1', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559183392625 }, { id: '5ce82f0deee6dc458a20b21e', name: 'usuario4.2', display: 'usuario4', descript: 'usuario4', avatar: 'blazer2.png', createdAt: 1559184735135 } ] Só que eu gostaria que ele só mostrasse o que tem a data mais atual que tenha o id = id
Não tenho nem ideia de como fazer isso…. alguem poderia ajudar…
