<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">
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) {
// 编辑操作
// 就是根据当前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;
this.data = '';
this.books.push(book);
}
// 清空表单
this.id = '';
this.name = '';
}, 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;
});
console.log(book)
// 把获取到的id提交到表单
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2 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) {
// 图书名存在
this.submitFlag = true
} else {
// 图书名不存在
this.submitFlag = false
}
}
},
mounted: function () {
// 该生命周期钩子函数被出发的时候。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: 252597867777
}, {
id: 2,
name: '水浒传',
date: 564634563453
}, {
id: 3,
name: '红楼梦',
date: 345435345343
}, {
id: 4,
name: '西游记',
date: 345345346533
}]
this.books = data
}
});
</script>
让自己感动自己一回,让自己欣赏自己一次,让自己佩服自己一把!