index7.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    </head>
    <body>
        <div id="app">
            <div
                class="static"
                v-bind:class="[{active:isActive}, errorClass]"
                style="width: 200px; height: 200px; text-align: center; line-height: 200px"
            >
                hi vue
            </div>
            <my-component class="baz boo"></my-component>
        </div>
        <script type="text/javascript">
            var vm = new Vue({
                el: "#app",
                data: {
                    isActive: true,
                    activeClass: "active",
                    errorClass: "text-danger",
                },
            });

        </script>
        <style>
            .active {
                background: #ff0000;
            }
        </style>
    </body>
</html>