基于Vue如何封装分页组件

2019-11-19 18:26:42

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使用Vue做双向绑定的时候，可能经常会用到分页功能

接下来我们来封装一个分页组件

先定义样式文件 pagination.css

ul, li {  margin: 0px;  padding: 0px;}.page-bar {  -webkit-touch-callout: none;  -webkit-user-select: none;  -khtml-user-select: none;  -moz-user-select: none;  -ms-user-select: none;  user-select: none;}.page-button-disabled {  color:#ddd !important;}.page-bar li {  list-style: none;  display: inline-block;}.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 .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;}

js文件 pagination.js

(function (vue) {  // html模板信息  var template = '<div class="page-bar"> /           <ul> /            <li><a class="{{ setButtonClass(0) }}" v-on:click="prvePage(cur)">上一页</a></li> /            <li v-for="index in indexs" v-bind:class="{ active: cur == index }"> /             <a v-on:click="btnClick(index)">{{ index < 1 ? "..." : index }}</a> /            </li> /            <li><a class="{{ setButtonClass(1) }}" v-on:click="nextPage(cur)">下一页</a></li> /           </ul> /          </div>'  var pagination = vue.extend({    template: template,    props: ['cur', 'all'],    computed: {      indexs: function () {        var left = 1        var right = this.all        var ar = []        if (this.all >= 11) {          if (this.cur > 5 && this.cur < this.all - 4) {            left = this.cur - 5            right = this.cur + 4          } else {            if (this.cur <= 5) {              left = 1              right = 10            } else {              right = this.all              left = this.all - 9            }          }        }        while (left <= right) {          ar.push(left)          left++        }        if (ar[0] > 1) {          ar[0] = 1;          ar[1] = -1;        }        if (ar[ar.length - 1] < this.all) {          ar[ar.length - 1] = this.all;          ar[ar.length - 2] = 0;        }        return ar      }    },    methods: {      // 页码点击事件      btnClick: function (data) {        if (data < 1) return;        if (data != this.cur) {          this.cur = data          this.$dispatch('btn-click', data)        }      },      // 下一页      nextPage: function (data) {        if (this.cur >= this.all) return;        this.btnClick(this.cur + 1);      },      // 上一页      prvePage: function (data) {        if (this.cur <= 1) return;        this.btnClick(this.cur - 1);      },      // 设置按钮禁用样式      setButtonClass: function (isNextButton) {        if (isNextButton) {          return this.cur >= this.all ? "page-button-disabled" : ""        }        else {          return this.cur <= 1 ? "page-button-disabled" : ""        }      }    }  })  vue.Pagination = pagination})(Vue)

pagination分页组件就封装好了，需要使用的时候，引入以上两个文件即可

接下来我们测试下效果

<!DOCTYPE html><html><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />  <title></title>  <script src="vue.js"></script>  <link href="pagination.css" rel="stylesheet" />  <script src="pagination.js"></script></head><body>  <div id="app">    <vue-pagination :cur.sync="cur" :all.sync="all" v-on:btn-click="listen"></vue-pagination>    <p>{{msg}}</p>  </div>  <script type="text/javascript">    var app = new Vue({      el: '#app',      data: {        // 当前页码        cur: 1,        // 总页数        all: 100,        msg: ''      },      components: {        // 引用组件        'vue-pagination': Vue.Pagination      },      methods: {        listen: function (data) {          // 翻页会触发此事件          this.msg = '当前页码：' + data        }      }    })  </script></body></html>

最终效果