<!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="https://www.ctyun.cn/portal/link.html?target=%22+%40click.prevent%3D'toEdit(item.id)'>修改</a>
<span>|</span>
<a href="https://www.ctyun.cn/portal/link.html?target=%22+%40click.prevent%3D'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>
运行结果
