Vue.js中提供 v-model 的指令对表单元素进行双向数据绑定，在修改表单元素值的同时，实例 vm 中对应的属性值也同时更新，反之亦然。本小节介绍主要input元素绑定v-model 后的具体用法和处理方式，实例所依赖的js代码如下：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <link rel="stylesheet" href="lib/bootstrap.min.css"> <script src="lib/jquery-1.7.2.js"></script> <script src="lib/bootstrap.js"></script> <script src="vue2.0.js"></script> <script src="vue-resource.js"></script> <script> window.onload = function(){ var vm = new Vue({ el : '.container', data : { message:'', picked:'Runoob',//radio 默认选择男 checked:'', multiChecked:[], selected:'A', //option 默认选择A multiSelected:[] }, methods:{ add:function(){ // alert(this); //添加数据到数组里面 this.myData.push({ name : this.username, age : this.age, }); //添加完后清空input this.username = ''; this.age = ''; }, deletMsg : function(n){ if(n == -2){ this.myData = []; }else{ this.myData.splice(n,1);//删除某一条数据 } } } }); } </script> </head> <body> <div class="container"> <form role="form"> <div class="form-group"> <h2>1. Text 输入框示例</h2> <input type="text" class="form-control" v-model="message"> <span>Your input is : {{ message }}</span> </div> <div class="form-group"> <h2>2. Radio 单选框示例</h2> <input type="radio" id="runoob" value="Runoob" v-model="picked"> <label for="runoob">Runoob</label> <br> <input type="radio" id="google" value="Google" v-model="picked"> <label for="google">Google</label> <br> <span>选中值为: {{ picked }}</span> <!-- picked值为选中的radio元素的value值 --> </div> <div class="form-group"> <h2>3.Checkbox </h2> <h4>Checkbox 分两种情况：单个勾选和多个勾选框</h4> <h5>单个勾选框：v-model即为布尔值，此时input的value并不影响v-model的值</h5> <input type="checkbox" v-model="checked"> <span>checked:{{ checked }}</span> <h5>多个勾选框：v-model使用相同的属性名称，此属性为数组</h5> <label for=""><input type="checkbox" value="1" v-model="multiChecked">1</label> <label for=""><input type="checkbox" value="2" v-model="multiChecked">2</label> <label for=""><input type="checkbox" value="3" v-model="multiChecked">3</label> <label for=""><input type="checkbox" value="4" v-model="multiChecked">4</label> <label for=""><input type="checkbox" value="5" v-model="multiChecked">5</label> <label for=""><input type="checkbox" value="6" v-model="multiChecked">6</label> <p>MultiChecked : {{ multiChecked.join(',') }}</p> </div> <div class="form-group"> <h2>4. Select</h2> <h4>Select 分两种情况：单选和多选，多选的时候需要绑定到一个数组</h4> <h5>单选：</h5> <select name="" id="" v-model="selected"> <option value="A">A</option> <option value="B">B</option> <option value="C">C</option> </select> <span>Selected: {{ selected }}</span> <h5>多选：</h5> <select name="" id="" v-model="multiSelected" multiple> <option value="A">A</option> <option value="B">B</option> <option value="C">C</option> <option value="D">D</option> <option value="E">E</option> <option value="F">F</option> </select> <span>Selected: {{ multiSelected }}</span> </div> </form> </div> </body> </html>