Filter by date

dates.js

const makeYMD = d => 
  d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate()

const getYesterday = d =>
  makeYMD(new Date(d.setDate(d.getDate() - 1)))

const dates = [
    {id: 1, date: makeYMD(new Date())},
    {id: 2, date: getYesterday(new Date())},
    {id: 3, date: makeYMD(new Date())}
]


const today = dates.filter(element => element.date === makeYMD(new Date()))