<div class="container">
  <div class="col-md-6 col-md-offset-3">
  <h1>Vue demo</h1>
   
  <div id="app">
   <table class="table table-hover ">
    <caption></caption>
   <thead>
    <tr>
    <th>序号</th>
    <th>书名</th>
    <th>作者</th>
    <th>价格</th>
    <th>操作</th>
    </tr>
   </thead>
   </table>
   
   <div id="add-book">
   <legend>添加书籍</legend>
   <div class="form-group">
    <label for="group">书名</label>
    <input type="text" class="form-control" id="group">
   </div>
   <div class="form-group">
    <label for="author">作者</label>
    <input type="text" class="form-control" id="author">
   </div>
   <div class="form-group">
    <label for="price">价格</label>
    <input type="text" class="form-control" id="price">
   </div>
   <button class="btn btn-primary btn-block">添加</button>
   <button class="btn btn-primary btn-block">查询</button>
   </div>
   
   <div id="update-book">
   <legend>修改书籍</legend>
   <div class="form-group">
    <label for="group1">书名</label>
    <input type="text" class="form-control" id="group1">
   </div>
   <div class="form-group">
    <label for="author1">作者</label>
    <input type="text" class="form-control" id="author1">
   </div>
   <div class="form-group">
    <label for="price1">价格</label>
    <input type="text" class="form-control" id="price1">
   </div>
   <button class="btn btn-primary btn-block">完成</button>
   </div>
  </div>
  </div>
 </div>

new Vue({
 el: '#app',
 data: {
 book: {
  id: 0,
  author: '',
  name: '',
  price: ''
 },
 books: [{
  id: 1,
  author: '曹雪芹',
  name: '红楼梦',
  price: 32.0
 }, {
  id: 2,
  author: '施耐庵',
  name: '水浒传',
  price: 30.0
 }, {
  id: '3',
  author: '罗贯中',
  name: '三国演义',
  price: 24.0
 }, {
  id: 4,
  author: '吴承恩',
  name: '西游记',
  price: 20.0
 }]
 }
 });

<div id="app">
   <table class="table table-hover ">
    <caption></caption>
   <thead>
    <tr>
    <th>序号</th>
    <th>书名</th>
    <th>作者</th>
    <th>价格</th>
    <th>操作</th>
    </tr>
   </thead>
   <tbody>
    <tr v-cloak v-for="book in books"> 
    <td>{{book.id}}</td>
    <td>{{book.name}}</td>
    <td>{{book.author}}</td>
    <td>{{book.price}}</td>
    <template v-if="book.id%2==0">
     <td class="text-left">
     <button type="button" class="btn btn-success" @click="delBook(book)" class="del">删除</button>
     <button type="button" class="btn btn-success" @click="updateBook(book)">修改</button>
     </td>
    </template>
    <template v-else>
     <td class="text-left">
     <button type="button" class="btn btn-danger" @click="delBook(book)" class="del">删除</button>
     <button type="button" class="btn btn-danger" @click="updateBook(book)">修改</button>
     </td>
    </template>
    </tr>
   </tbody>
   </table>
   
   <div id="add-book">
   <legend>添加书籍</legend>
   <div class="form-group">
    <label for="group">书名</label>
    <input type="text" class="form-control" id="group" v-model="book.name">
   </div>
   <div class="form-group">
    <label for="author">作者</label>
    <input type="text" class="form-control" id="author" v-model="book.author">
   </div>
   <div class="form-group">
    <label for="price">价格</label>
    <input type="text" class="form-control" id="price" v-model="book.price">
   </div>
   <button class="btn btn-primary btn-block" v-on:click="addBook()">添加</button>
   <button class="btn btn-primary btn-block" v-on:click="searchBook()">查询</button>
   </div>
   
   <div id="update-book">
   <legend>修改书籍</legend>
   <div class="form-group">
    <label for="group1">书名</label>
    <input type="text" class="form-control" id="group1" v-model="book.name">
   </div>
   <div class="form-group">
    <label for="author1">作者</label>
    <input type="text" class="form-control" id="author1" v-model="book.author">
   </div>
   <div class="form-group">
    <label for="price1">价格</label>
    <input type="text" class="form-control" id="price1" v-model="book.price">
   </div>
   <button class="btn btn-primary btn-block" v-on:click="updatesBook()">完成</button>
   </div>
  </div>

addBook: function() {
  //计算书的id
  this.book.id = this.books.length + 1;
  this.books.push(this.book);
  //将input中的数据重置
  this.book = {};
 }

delBook: function(book) {
  var blength = this.books.length;
  this.books.splice(book.id-1, 1);
  for( var i = 0; i < blength ; i++) {
  if(book.id < this.books[i].id) { 
   this.books[i].id -= 1;
  }
  } 
 }

updateBook: function(book) {
  $("#add-book").css("display","none");
  $("#update-book").css("display","block");
  id = book.id;
 },
 updatesBook:function(book) {
  this.book.id = id;
  this.books.splice(id-1,1,this.book);
  $("#add-book").css("display","block");
  $("#update-book").css("display","none");
  this.book = {};