<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12"></script>
    <title>Document</title>
</head>

<body>
    <div id="test">
        {{leechoy}}
    </div>
</body>
<script>
    var vm = new Vue({
        el: '#test',
        data() {
            return {
                leechoy: "welcome to vue!"
            }
        }
    })
</script>

</html>

截图：

简单入坑vue_html