上一篇文章介紹了vuejs實(shí)現(xiàn)的簡(jiǎn)單分頁，如果我有幾個(gè)頁面都需要有分頁效果，不可能每個(gè)頁面都去復(fù)制一下這段代碼吧，意思是封裝一下，變成通用的組件。
首先使用基礎(chǔ) Vue 構(gòu)造器，創(chuàng)建一個(gè)“子類”,Vue.extend( options )
var barHtml = '<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>'+ '<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>'; 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;這兒創(chuàng)建了一個(gè)全局的pagenav，可以在其它地方都可以調(diào)用。
html代碼
<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代碼
.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;}新建一個(gè)vue對(duì)象實(shí)例
var pageBar = new Vue({ el: '#page', data: { all: 8, //總頁數(shù) cur: 1,//當(dāng)前頁碼 msg:'' }, components:{ 'vue-nav':pagenav }, watch: { cur: function(oldValue , newValue){ console.log('監(jiān)聽cur前與后的值：'); console.log(arguments); } }, methods:{ listenDate:function(data){ this.cur = data; this.msg = '你點(diǎn)擊了'+data+ '頁'; } } })簡(jiǎn)單的用js封裝了一下分頁組件。
實(shí)現(xiàn)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()">上一頁</a></li>'+ '<li v-if="cur==1"><a class="banclick">上一頁</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>'; 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, //總頁數(shù) cur: 1,//當(dāng)前頁碼 msg:'' }, components:{ 'vue-nav':pagenav }, watch: { cur: function(oldValue , newValue){ console.log('監(jiān)聽cur前與后的值：'); console.log(arguments); } }, methods:{ listenDate:function(data){ this.cur = data; this.msg = '你點(diǎn)擊了'+data+ '頁'; } } })</script></body></html>以上所述是小編給大家介紹的vuejs2.0實(shí)現(xiàn)分頁組件使用$emit進(jìn)行事件監(jiān)聽數(shù)據(jù)傳遞，希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)武林網(wǎng)網(wǎng)站的支持！
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