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超轻量级php框架startmvc

vuejs2.0实现分页组件使用$emit进行事件监听数据传递的方法

更新时间:2020-04-25 08:40:01 作者:startmvc
上一篇文章介绍了vuejs实现的简单分页,如果我有几个页面都需要有分页效果,不可能每个

上一篇文章介绍了vuejs实现的简单分页,如果我有几个页面都需要有分页效果,不可能每个页面都去复制一下这段代码吧,意思是封装一下,变成通用的组件。

首先使用基础 Vue 构造器,创建一个“子类”,Vue.extend( options )


var barHtml = '<div class="page-bar">'+
 '<ul>'+
 '<li v-if="cur>1"><a v-on:click="cur--,pageClick()">上一页</a></li>'+
 '<li v-if="cur==1"><a class="banclick">上一页</a></li>'+
 '<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()">下一页</a></li>'+
 '<li v-if="cur == all"><a class="banclick">下一页</a></li>'+
 '<li><a>共<i>{{all}}</i>页</a></li>'+
 '</ul>'+
 '</div>';
 var navBar = Vue.extend({
 template:barHtml,
 props:['all','cur'],
 computed: {
 indexs: function(){
 var left = 1;
 var right = this.all;
 var ar = [];
 if(this.all>= 5){
 if(this.cur > 3 && this.cur < this.all-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 ++
 }
 return ar
 } 
 },
 methods: {
 btnclick: function(data){
 if(data != this.cur){
 this.cur = data;
 this.$emit('btn-click',data); 
 }
 },
 pageClick: function(){
 this.$emit('btn-click',this.cur);
 }
 }, 
 });
 window.pagenav = navBar;

这儿创建了一个全局的pagenav,可以在其它地方都可以调用。

html代码


<div id="page">
 <vue-nav :cur.sync="cur" :all.sync="all" v-on:btn-click="listenDate"></vue-nav>
 <p style="margin-left:40px;">{{msg}}</p>
</div>

css代码


.page-bar{
 margin:40px;
}
ul,li{
 margin: 0px;
 padding: 0px;
}
li{
 list-style: none
}
.page-bar ul{
 overflow: hidden;
}
.page-bar li{
 float: left;
}
.page-bar li:first-child>a {
 margin-left: 0px
}
.page-bar a{
 display: block;
 border: 1px solid #ddd;
 text-decoration: none;
 position: relative;
 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;
}

新建一个vue对象实例


var pageBar = new Vue({
 el: '#page',
 data: {
 all: 8, //总页数
 cur: 1,//当前页码
 msg:''
 },
 components:{
 'vue-nav':pagenav
 },
 watch: {
 cur: function(oldValue , newValue){
 console.log('监听cur前与后的值:');
 console.log(arguments);
 }
 }, 
 methods:{
 listenDate:function(data){
 this.cur = data;
 this.msg = '你点击了'+data+ '页';
 }
 }
 })

简单的用js封装了一下分页组件。

实现效果


<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
<meta charset="utf-8">
<title></title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<script type="text/javascript" src="js/vue.min2.js"></script>
<style>
.page-bar{
 margin:40px;
}
ul,li{
 margin: 0px;
 padding: 0px;
}
li{
 list-style: none
}
.page-bar ul{
 overflow: hidden;
}
.page-bar li{
 float: left;
}
.page-bar li:first-child>a {
 margin-left: 0px
}
.page-bar a{
 display: block;
 border: 1px solid #ddd;
 text-decoration: none;
 position: relative;
 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 id="page">
 <vue-nav :cur.sync="cur" :all.sync="all" v-on:btn-click="listenDate"></vue-nav>
 <p style="margin-left:40px;">{{msg}}</p>
</div>
<script type="text/javascript">
 var barHtml = '<div class="page-bar">'+
 '<ul>'+
 '<li v-if="cur>1"><a v-on:click="cur--,pageClick()">上一页</a></li>'+
 '<li v-if="cur==1"><a class="banclick">上一页</a></li>'+
 '<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()">下一页</a></li>'+
 '<li v-if="cur == all"><a class="banclick">下一页</a></li>'+
 '<li><a>共<i>{{all}}</i>页</a></li>'+
 '</ul>'+
 '</div>';
 var navBar = Vue.extend({
 template:barHtml,
 props:['all','cur'],
 computed: {
 indexs: function(){
 var left = 1;
 var right = this.all;
 var ar = [];
 if(this.all>= 5){
 if(this.cur > 3 && this.cur < this.all-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 ++
 }
 return ar
 } 
 },
 methods: {
 btnclick: function(data){
 if(data != this.cur){
 this.cur = data;
 this.$emit('btn-click',data); 
 }
 },
 pageClick: function(){
 this.$emit('btn-click',this.cur);
 }
 }, 
 });
 window.pagenav = navBar;
 var pageBar = new Vue({
 el: '#page',
 data: {
 all: 8, //总页数
 cur: 1,//当前页码
 msg:''
 },
 components:{
 'vue-nav':pagenav
 },
 watch: {
 cur: function(oldValue , newValue){
 console.log('监听cur前与后的值:');
 console.log(arguments);
 }
 }, 
 methods:{
 listenDate:function(data){
 this.cur = data;
 this.msg = '你点击了'+data+ '页';
 }
 }
 })
</script>
</body>
</html>

以上所述是小编给大家介绍的vuejs2.0实现分页组件使用$emit进行事件监听数据传递,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持!

vue2.0 分页组件