<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Mouse Event</title>
    <style>
        #myButton{
            text-decoration: none;
            background-color: blue;
            padding: 5px;
            margin: 10px;
            color: white;
            border-radius: 5px;
        }
    </style>
</head>
<body>
    <button
        href=""
        id="myButton"
        onmouseover = mouseOver(this)
        onmousedown = mouseDown(this)
        onmouseup = mouseUp(this)
        onclick = mouseClick()
    >Not clicked
    </button>
    <h1 id="result"></h1>

    <script>
        function mouseOver(obj){
            obj.innerHTML = "Mouse over me"
        }

        function mouseDown(obj){
            obj.style.backgroundColor = 'grey'
            obj.innerHTML = "Mouse click me, release"

        }

        function mouseUp(obj){
            obj.style.backgroundColor = 'blue'
            obj.innerHTML = "I am clicked"
        }

        function mouseClick(){
            document.getElementById('result').innerHTML = "It's all done"
        }
    </script>
</body>
</html>