<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src='https://bbs.csdn.net/js/vue.js'></script>
<style>
.page-bar{
margin:40px;
}
ul,li{
margin: 0px;
padding: 0px;
}
li{
list-style: none
}
.page-bar li:first-child>a {
margin-left: 0px
}
.page-bar a{
border: 1px solid #ddd;
text-decoration: none;
position: relative;
float: left;
padding: 6px 12px;
margin-left: -1px;
line-height: 1.42857143;
color: #337ab7;
cursor: pointer
}
.page-bar a:hover{
background-color: #eee;
}
.page-bar a.banclick{
cursor:not-allowed;
}
.page-bar .active a{
color: #fff;
cursor: default;
background-color: #337ab7;
border-color: #337ab7;
}
.page-bar i{
font-style:normal;
color: #d44950;
margin: 0px 4px;
font-size: 12px;
}
</style>
</head>
<body>
<div class="page-bar">
<ul>
<li v-if="cur>1"><a v-on:click="cur--,pageClick()">上一頁</a ></li>
<li v-if="cur==1"><a class="banclick">上一頁</a ></li>
<!--當前頁背景色為藍色-->
<li v-for="index in indexs" v-bind:class="{ 'active': cur == index}">
<a v-on:click="btnClick(index)">{{ index }}</a >
</li>
<li v-if="cur<all"><a v-on:click="cur++,pageClick()">下一頁</a ></li>
<li v-if="cur == all"><a class="banclick">下一頁</a ></li>
<li><a>共<i>{{all}}</i>頁</a ></li>
</ul>
</div>
<script type="text/javascript">
var pageBar = new Vue({
el: '.page-bar',
data: {
all: 28, //總頁數
cur: 1//當前頁碼
},
watch: {
cur: function(oldValue , newValue){
console.log(arguments);
}
},
methods: {
btnClick: function(data){
if(data != this.cur){
this.cur = data;
}
},
pageClick: function(){
console.log('現在在'+this.cur+'頁');
}
},
computed: {
indexs: function(){
var left = 1;
var right = this.all;
var ar = [];
if(this.all>= 5){
//這里最大范圍從3到6，如果到達7，那么下邊加2變成9，已經超過最大的范圍值
if(this.cur > 3 && this.cur < this.all-1){
//以4為參考基準，左面加2右邊加2
left = this.cur - 2
right = this.cur + 2
}else{
if(this.cur<=3){
left = 1
right = 5
}else{
right = this.all
left = this.all -4
}
}
}
while (left <= right){
ar.push(left)
left ++
}
console.log(ar);
return ar
}
}
})
</script>
</body>
</html>
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標籤：JavaScript
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