examples/jquery/events1.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Events example #1</title>
    <style>
        div {
            width: 100px;
            height: 100px;
            border: 1px solid grey;
            margin: 10px;
        }
        #red {
            background-color: red;
        }
        #blue {
            background-color: blue;
        }
    </style>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
    <script>
        $(document).ready(function () {
            $("div").click(function () {
                alert("Clicked a square!");
            });
            $("#red").mouseenter(function (){
                console.log("You entered the red square!");
            });
            $("#red").mouseleave(function (){
                console.log("You left the red square!");
            });
        });
    </script>
</head>
<body>
    <div id="red"></div>
    <div id="blue"></div>
</body>
</html>