<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> .grid .total { height: 30px; line-height: 30px; background-color: palegoldenrod; } </style> <body> <div id="app"> <div class="grid"> <div> <h1>图书管理</h1> <div class="book"> <div> <label for="id"> 编号: </label> <input type="text" id="id" v-model='id' :disabled='flag'> <label for="name"> 名称: </label> <input type="text" id="name" v-model='name'> <button @click='handle'>提交</button> </div> </div> </div> <div class="total"> <span>图书总数:</span> <span>{{total}}</span> </div> <table> <thead> <tr> <th>编号</th> <th>名称</th> <th>时间</th> <th>操作</th> </tr> </thead> <tbody> <tr :key='item.id' v-for='item in books'> <td>{{item.id}}</td> <td>{{item.name}}</td> <td>{{date|format('yyyy-MM-dd')}}</td> <td><a href="" @click.prevent='toEdit(item.id)'>修改</a> <span>|</span> <a href="" @click.prevent='deleteBook(item.id)'>删除</a> </td> </tr> <!-- <tr> <td>1</td> <td>javascript</td> <td>2018-01-01</td> <td>删除</td> </tr> --> <!-- <tr> <td>1</td> <td>javascript</td> <td>2018-01-01</td> <td>删除</td> </tr> <tr> <td>1</td> <td>javascript</td> <td>2018-01-01</td> <td>删除</td> </tr> --> </tbody> </table> </div> </div> <script type="text/javascript" src="./js/vue.js"></script> <script> Vue.filter('format', function(value, arg) { //console.log(arg); if (arg == 'yyyy-MM-dd') { var ret = ''; ret += value.getFullYear() + '-' + (value.getMonth() + 1) + '-' + value.getDate(); return ret; } return value; }) var vm = new Vue({ el: '#app', data: { flag: false, id: '', name: '', date: new Date(), books: [{ id: 1, name: '三国演义', }, { id: 2, name: '三国演义', date: '' }, { id: 3, name: '三国演义', date: '' }, { id: 4, name: '三国演义', date: '' }] }, methods: { handle: function() { if (this.flag) { //编辑操作 //就是根据当前的id更新数组中的数据 this.books.some((item) => { if (item.id == this.id) { item.name = this.name; //完成遍历之后 终止循环 return true; } }); this.flag = false; } else { //添加图书 var book = {}; book.id = this.id; book.name = this.name; book.date = ''; this.books.push(book); //清空表单 this.id = ''; this.name = ''; } this.id = ''; this.name = ''; }, toEdit: function(id) { //禁止修改id this.flag = true; console.log(id); //根据id查询要编辑的数据 var book = this.books.filter(function(item) { return item.id == id; }); console.log(book); this.id = book[0].id; this.name = book[0].name; }, deleteBook: function(id) { //根据id从数组中查找索引 /* this.books.findIndex(function(item) { return item.id == id; }); */ /* this.books.splice(index, 1); */ //------ //通过数组filter this.books = this.books.filter(function(item) { return item.id != id; }); } }, computed: { total: function() { return this.books.length; } } }) </script> </body> </html>
