Vue2.0中v-for叠代語法變化（key、index）
阿新 • • 發佈：2017-10-24
分鐘 eth data href head htm ref fields type
語法發生了變化：http://blog.csdn.net/sinat_35512245/article/details/53966788
新數組語法
value in arr
(value, index) in arr
新對象語法
value in obj (value, key) in obj
(value, key, index) in obj
對 Vue.js——60分鐘快速入門 的demo修改之後的源碼為：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script src="js/vue.js"></script> </head> <body> <div id="app"> <fieldset> <legend> Create New Person </legend> <div class="form-group"> <label>Name:</label> <input type="text" v-model="newPerson.name"/> </div> <div class="form-group"> <label>Age:</label> <input type="text" v-model="newPerson.age"/> </div> <div class="form-group"> <label>Sex:</label> <select v-model="newPerson.sex"> <option value="Male">Male</option> <option value="Female">Female</option> </select> </div> <div class="form-group"> <label></label> <button @click="createPerson">Create</button> </div> </fieldset> <table> <thead> <tr>
<th>Index</th> <th>Name</th> <th>Age</th> <th>Sex</th> <th>Delete</th> </tr> </thead> <tbody> <tr v-for="(person,index) in people"> <td>{{ index }}</td> <td>{{ person.name }}</td> <td>{{ person.age }}</td> <td>{{ person.sex }}</td> <td :class="‘text-center‘"><button @click="deletePerson(index)">Delete</button></td> </tr> </tbody> </table> </div> </body> <script src="js/vue.js"></script> <script> var vm = new Vue({ el: ‘#app‘, data: { newPerson: { name: ‘‘, age: 0, sex: ‘Male‘ }, people: [{ name: ‘Jack‘, age: 30, sex: ‘Male‘ }, { name: ‘Bill‘, age: 26, sex: ‘Male‘ }, { name: ‘Tracy‘, age: 22, sex: ‘Female‘ }, { name: ‘Chris‘, age: 36, sex: ‘Male‘ }] }, methods:{ createPerson: function(){ this.people.push(this.newPerson); // 添加完newPerson對象後，重置newPerson對象 this.newPerson = {name: ‘‘, age: 0, sex: ‘Male‘} }, deletePerson: function(index){ // 刪一個數組元素 this.people.splice(index,1); } } }) </script> </html>
Vue2.0中v-for叠代語法變化（key、index）