47.1 62 Map and filter example.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const data=[
            {id:1, title:"first"},
            {id:2, title:"second"},
            {id:3, title:"third"},
            {id:4, title:"fourth"},
        ]
        console.table(data)
        //applying map
        const result=data.map(el=>el.title.toUpperCase())
        console.table(result);

        //applying filter
        const resultTwo=data.filter(el => el.id % 2 ==0);
        console.table(resultTwo);
    </script>
</body>
</html>