Vue-Learn
/
Vue21.1 名称案例.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>名称案例</title>
    <link rel="stylesheet" href="libs/css/bootstrap.css">
    <script src="libs/js/vue.js"></script>

</head>
<body>
    <div id="app" class="container" style="padding-top: 22px;">

        <form action="" method="POST" class="form-inline" role="form">

            <div class="form-group">
                <!-- 分析
                    1. 监听到文本框内容的改变，然后进行 fullname 的拼接
                    2. 如何监听 文本框数据的改变呢 ？？ @keyup 或者 change

                -->
                <input type="text" v-model="firstname" @keyup="getFullname" name="" id="input" class="form-control">+
                <input type="text" v-model="lastname" @keyup="getFullname" name="" id="input2" class="form-control">=
                <input type="text" v-model="fullname" name="" id="input3" class="form-control">
            </div>
        </form>


    </div>

    <script>

        var app = new Vue({
            el: "#app",
            data: {
                firstname: "",
                lastname: "",
                fullname: "",
            },
            methods: {
                getFullname(){
                    this.fullname = this.firstname + "-" + this.lastname
                }
            }
        })
    </script>
</body>
</html>