FTT-JavaScript/aulajs15.html at master · luizgustavo77/FTT-JavaScript · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>JavaScript Aula 15</title>
    <style>
        .container {
            width: 400px;
            height: 400px;
            position: relative;
            background: lightgray;
        }

        .box {
            width: 50px;
            height: 50px;
            position: absolute;
            background-color: red;
        }
    </style>
    <script>
        function animação() {
            let box = document.getElementById("box");
            let pos = 0;
            let id = setInterval(frame, 5);

            function frame() {
                if (pos == 350) {
                    clearInterval(id);
                } else {
                    pos++;
                    box.style.top = pos + "px";
                    box.style.left = pos + "px";
                }
            }
        }
    </script>
</head>

<body>
    <h1>JavaScript Aula 15</h1>
    <h2>Animação via JavaScript</h2>
    <p><button onclick="animação()">Animação</button></p>

    <div class="container">
        <div id="box" class="box"></div>
    </div>

</body>
</html>