服务器之家:专注于服务器技术及软件下载分享
分类导航

node.js|vue.js|jquery|angularjs|React|json|js教程|

服务器之家 - 编程语言 - JavaScript - Vue实现图书管理小案例

Vue实现图书管理小案例

2021-12-02 16:03代码在路上 JavaScript

这篇文章主要为大家详细介绍了Vue实现图书管理小案例,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

本文实例为大家分享了Vue实现图书管理的具体代码,供大家参考,具体内容如下

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
     .grid{
      margin:auto;
      width:500px;
      text-align:center;
     }
     .grid table{
      width:100%;
      border-collapse:collapse;
     }
     .grid th,td{
      padding:10px;
      border:1px solid orange;
      height:35px;
      line-height:35px;
     }
     .grid th{
      background-color:orange;
     }
     .book{
      background-color:orange;
      border-bottom:1px solid #ccc;
      padding:5px;
     }
     input{
      width:150px;
      outline:none;
     }
     .grid .total{
      height:30px;
      line-height:30px;
      background-color:orange;
      border-bottom:1px solid #ccc;
     }
  </style>
</head>
<body>
<div id="app">
  <div class="grid">
   <div>
     <h1>图书管理</h1>
     <div class="book">
      <label for="id">编号:</label>
      <input type="text" id="id" v-model='id' :disabled='flag' v-focus>
      <label for="name">名称:</label>
      <input type="text" id="name" v-model='name'>
      <button @click='handle' :disabled='submitFlag'>提交</button>
     </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>{{item.date | format('yyyy-MM-dd hh:mm:ss')}}</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>
     </tbody>
   </table>
</div>
<script src="js/vue.js"></script>
<script>
  //自定义指令
  Vue.directive('focus',{
    inserted:function(el){
      el.focus();
    }
  })
  //过滤器(格式化日期)
  Vue.filter('format', function(value, arg) {
      function dataFormat(date, format) {
        if (typeof date === "string") {
          var mts = date.match(/(\/Date\((\d+)\)\/)/);
          if (mts && mts.length >= 3) {
            date = parseInt(mts[2]);
          }
        }
        date = new Date(date);
        if (!date || date.toUTCString() == "Invalid Date") {
          return "";
        }
        var map = {
          "M": date.getMonth() + 1, //月
          "d": date.getDate(), //日
          "h": date.getHours(), //小时
          "m": date.getMinutes(), //分
          "s": date.getSeconds(), //秒
          "q": Math.floor((date.getMonth() + 3) / 3), //季度
          "S": date.getMilliseconds() //毫秒
        };
        format = format.replace(/([yMdhmsqS])+/g, function(all, t) {
          var v = map[t];
          if (v !== undefined) {
            if (all.length > 1) {
              v = '0' + v;
              v = v.substr(v.length - 2);
            }
            return v;
          } else if (t == 'y') {
            return (date.getFullYear() + '').substr(4 - all.length);
          }
          return all;
        });
        return format;
      }
      return dataFormat(value, arg);
    })
 
    var vm=new Vue({
      el:'#app',
      data:{
       flag:false,
       submitFlag:false,
       id:'',
       name:'',
       books:[]
      },
      methods:{
       handle:function(){
         if(this.flag){
          //修改操作:就是根据当前的id去更新数组中对应的数据
          //箭头函数的this不是window
          //some方法判断什么时候终止循环
          this.books.some((item)=>{
            if(item.id==this.id){
              item.name=item.name;
              //完成更新操作之后,要终止循环
              return true;
            }
          });
          this.flag=false;
         }else{
          //添加操作
          //添加图书
          var book={};
          book.id=this.id;
          book.name=this.name;
          book.date=new Date();
          this.books.push(book);
         }
         //清空表单
         this.id='';
         this.name='';
       },//handle结束
       toEdit:function(id){
         //禁止修改id
         this.flag=true;
         //根据id查询出要编辑的数据
         var book=this.books.filter(function(item){
           return item.id==id;
         });
         //把获取的信息填充到表单
         this.id=book[0].id;
         this.name=book[0].name;
       },//toEdit结束
       deleteBook:function(id){
         //删除图书
         //根据id从数组中查找元素的索引
         var index=this.books.findIndex(function(item){
           return item.id==id;
         });
         //根据索引删除数组元素
         this.books.splice(index,1);
         
         //方法二:通过filter方法进行删除
         //this.books=this.books.filter(function(item){
          //return item.id!=id;
         //});
       }//deleteBook结束
      },
      computed:{
       total:function(){
         //计算图书的总数
         return this.books.length;
       }
      },//computed结束
      watch:{
       name:function(val){
         //验证图书名称是否已经存在
         var flag=this.books.some(function(item){
          return item.name==val;
         });
         if(flag){
          //图书名称存在
          this.submitFlag=true;
         }else{
          this.submitFlag=false;
         }
       }
      },//watch结束
      mounted:function(){
       //该生命周期钩子函数被触发的时候,模板已经可以使用
       //一般用于获取后台数据,然后把数据填充到模板
       //模拟接口
       var data=[{
         id:1,
         name:'三国演义',
         date:1585609975000
       },{
         id:2,
         name:'水浒传',
         date:1586609975000
       },{
         id:3,
         name:'红楼梦',
         date:1587609975000
       },{
         id:4,
         name:'西游记',
         date:1588609975000
       }];
       this.books=data;
      }
    });
</script>
</body>
</html>

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:https://blog.csdn.net/m0_52250741/article/details/110426365

延伸 · 阅读

精彩推荐