<table> <tr> <th>ID</th> <th>书名</th> <th>作者</th> <th>价格</th> <th>操作</th> </tr> <tr v-for="(book,index) in books"> <td>{{book.id}}</td> <td>{{book.name}}</td> <td>{{book.author}}</td> <td>{{book.price}}</td> <td> <button @click="delBook(index)">删除</button> </td> </tr> </table> <fieldset> <legend>添加新书</legend> <p>书名：<input type="text" v-model="newBook.name"></p> <p>作者：<input type="text" v-model="newBook.author"></p> <p>价格：<input type="text" v-model="newBook.price"></p> <p><button @click="addBook">添加</button></p> </fieldset> <script> new Vue({ el:'#books', data:{ books:[ {id:1, name:'红楼梦', author:'曹雪芹', price:'1'}, {id:2, name:'西游记', author:'吴承恩', price:'2'}, {id:3, name:'水浒传', author:'施耐庵', price:'3'} ], newBook:{ id:0, name:'', author:'', price:'' } }, methods:{ delBook:function(idx){ if(window.confirm('确认要删除？')){ this.books.splice(idx, 1); } }, addBook:function(){ // 约束 if(this.newBook.name.length == 0) { alert('书名不能为空'); return; } if(this.newBook.author.length == 0){ alert('书的作者不能为空'); return; } if(this.newBook.price.length == 0){ this.newBook.price = '0' } // 计算插入id var maxId = 0; for(var i=0; i<this.books.length; i++){ if(maxId<this.books[i].id){ maxId = this.books[i].id; } } this.newBook.id = maxId+1; // 插入到 books中 this.books.push(this.newBook); // 清空新书 this.newBook = {}; } } }); </script>
效果图：
