12-nestingConditions.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Demo</title>
    </head>
    <body>
        <script type="text/javascript">
            // Fun with nesting if/else and comparison operators

            var apple = 20;
            var orange = 99;
            var cherry = 99;

            if (apple != orange) {
                if (orange == cherry) {
                    document.write('I have ' + (orange + cherry) + ' oranges and cherries!');
                } else {
                    document.write('I have ' + (apple + orange + cherry) + ' apples, oranges and cherries in my basket');
                }
            }

            // short hand for nesting complex conditions
            if ((apple < orange) && (orange == cherry)) {
                document.write('I got fruit!');
            }

            // shorthand for OR condition
            if ((apple < orange) || (apple == orange)) {
                document.write('I have apples and oranges');
            }

        </script>

    </body>
</html>