const persons = [
{name:"Shirshak",gender:"male"},
{name:"Amelia",gender:"female"},
{name:"Amand",gender:"male"}
]
//filter return all objects in array
let male = persons.filter(function(person){
return person.gender==='male'
})
console.log(male) //[{name:"Shirshak",gender:"male"},{name:"Amand",gender:"male"}]
//find return first object that match condition
let female = persons.find(function(person){
return person.gender==='female'
})