图书管理案例：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.grid {
margin: auto;
width: 530px;
text-align: center;
}
.grid table {
border-top: 1px solid #C2D89A;
width: 100%;
border-collapse: collapse;
}
.grid th,
td {
padding: 10;
border: 1px dashed #F3DCAB;
height: 35px;
line-height: 35px;
}
.grid th {
background-color: #F3DCAB;
}
.grid .book {
padding-bottom: 10px;
padding-top: 5px;
background-color: #F3DCAB;
}
</style>
</head>
<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>
<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}}</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>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
/*
图书管理-添加图书
*/
var vm = new Vue({
el: '#app',
data: {
flag: false,
id: '',
name: '',
books: [{
id: 1,
name: '三国演义',
date: ''
}, {
id: 2,
name: '水浒传',
date: ''
}, {
id: 3,
name: '红楼梦',
date: ''
}, {
id: 4,
name: '西游记',
date: ''
}]
},
methods: {
handle: function () {
if (this.flag) {
// 编辑图书
// 就是根据当前的ID去更新数组中对应的数据
this.books.some((item) => {
if (item.id == this.id) {
item.name = this.name;
// 完成更新操作之后，需要终止循环
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 = '';
}
// 清空表单
this.id = '';
this.name = '';
},
toEdit: function (id) {
// 禁止修改ID
this.flag = true;
console.log(id)
// 根据ID查询出要编辑的数据
var book = this.books.filter(function (item) {
return item.id == id;
});
console.log(book)
// 把获取到的信息填充到表单
this.id = book[0].id;
this.name = book[0].name;
},
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;
});
}
}
});
</script>
</body>
</html>
常用特性优化案例：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.grid {
margin: auto;
width: 530px;
text-align: center;
}
.grid table {
border-top: 1px solid #C2D89A;
width: 100%;
border-collapse: collapse;
}
.grid th,td {
padding: 10;
border: 1px dashed #F3DCAB;
height: 35px;
line-height: 35px;
}
.grid th {
background-color: #F3DCAB;
}
.grid .book {
padding-bottom: 10px;
padding-top: 5px;
background-color: #F3DCAB;
}
.grid .total {
height: 30px;
line-height: 30px;
background-color: #F3DCAB;
border-top: 1px solid #C2D89A;
}
</style>
</head>
<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" 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>
<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>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
/*
图书管理-添加图书
*/
Vue.directive('focus', {
inserted: function (el) {
el.focus();
}
});
Vue.filter('format', function(value, arg) {
function dateFormat(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, //月份
"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 dateFormat(value, arg);
})
var vm = new Vue({
el: '#app',
data: {
flag: false,
submitFlag: false,
id: '',
name: '',
books: []
},
methods: {
handle: function(){
if(this.flag) {
// 编辑图书
// 就是根据当前的ID去更新数组中对应的数据
this.books.some((item) => {
if(item.id == this.id) {
item.name = this.name;
// 完成更新操作之后，需要终止循环
return true;
}
});
this.flag = false;
}else{
// 添加图书
var book = {};
book.id = this.id;
book.name = this.name;
book.date = 2525609975000;
this.books.push(book);
// 清空表单
this.id = '';
this.name = '';
}
// 清空表单
this.id = '';
this.name = '';
},
toEdit: function(id){
// 禁止修改ID
this.flag = true;
console.log(id)
// 根据ID查询出要编辑的数据
var book = this.books.filter(function(item){
return item.id == id;
});
console.log(book)
// 把获取到的信息填充到表单
this.id = book[0].id;
this.name = book[0].name;
},
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;
});
}
},
computed: {
total: function(){
// 计算图书的总数
return this.books.length;
}
},
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{
// 图书名称不存在
this.submitFlag = false;
}
}
},
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
// 一般此时用于获取后台数据，然后把数据填充到模板
var data = [{
id: 1,
name: '三国演义',
date: 2525609975000
},{
id: 2,
name: '水浒传',
date: 2525609975000
},{
id: 3,
name: '红楼梦',
date: 2525609975000
},{
id: 4,
name: '西游记',
date: 2525609975000
}];
this.books = data;
}
});
</script>
</body>
</html>
