<!DOCTYPE html>
<html>
<body>
<p>Click the button to get a new array with the full name of each person in the array.</p>
<button onclick="myFunction()">Try it</button>
<p>New array: <span id="demo"></span></p>
<script>
var persons = [
{firstname : "Malcom", lastname: "Reynolds"},
{firstname : "Kaylee", lastname: "Frye"},
{firstname : "Jayne", lastname: "Cobb"}
];
function getFullName(item,index) {
var fullname = [item.firstname,item.lastname].join(" ");
return fullname;
}
function myFunction() {
document.getElementById("demo").innerHTML = persons.map(getFullName);
}
</script>
</body>
</html>