vue学习——第一个demo

时间 2019-12-06 标签 vue 学习第一个 demo

第一个Vue

引入js:

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17-beta.0/vue.js"></script>

建立Vue app：

<script>
        var app = new Vue({
            el: '#app',
            data: {
                name: null,
                age: null,
                sex: null
            }
        });
</script>

el==element后面接标签#id
data是Vue的存数据的地方，多个属性用,隔开javascript

显示：

使用{{test}}形式,展现值html

<div> <input type="text" v-model="name"> <span v-show="name">姓名：{{name}}</span> </div> <div> <input type="text" v-model="name"> <span v-show="name">姓名：{{name}}</span> </div>

顺便简单了解了v-model,v-show的简单用法。vue

完整demo:

<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>vue学习 语法demo1</title> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <div id="app"> <div> <input type="text" v-model="name"> <span v-show="name">姓名：{{name}}</span> </div> <div> <input type="text" v-model="age"> <span v-show="age">年龄{{age}}</span> </div> <div> <input type="text" v-model="sex"> <span v-show="sex">性别：{{sex}}</span> </div> </div> <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17-beta.0/vue.js"></script> <script> var app = new Vue({ el: '#app', data: { name: null, age: null, sex: null } }); </script> </body> </html> <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>vue学习 语法demo1</title> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <div id="app"> <div> <input type="text" v-model="name"> <span v-show="name">姓名：{{name}}</span> </div> <div> <input type="text" v-model="age"> <span v-show="age">年龄{{age}}</span> </div> <div> <input type="text" v-model="sex"> <span v-show="sex">性别：{{sex}}</span> </div> </div> <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17-beta.0/vue.js"></script> <script> var app = new Vue({ el: '#app', data: { name: null, age: null, sex: null } }); </script> </body> </html>

如图：
java