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'
})
function myFunction() {
// Declare variables
var input, filter, ul, li, a, i, txtValue;
input = document.getElementById('myInput');
filter = input.value.toUpperCase();
ul = document.getElementById("myUL");
li = ul.getElementsByTagName('li');
// Loop through all list items, and hide those who don't match the search query
for (i = 0; i < li.length; i++) {
a = li[i].getElementsByTagName("a")[0];
txtValue = a.textContent || a.innerText;
if (txtValue.toUpperCase().indexOf(filter) > -1) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
}
}