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AngularJS and BootStrap imitate Baidu's paging method

不言Original: 2018-07-04 11:42:321401browse

This article mainly introduces the sample code of AngularJS and BootStrap to imitate Baidu paging. Pagination can be used many times. Now I share it with you and give it as a reference.

Imitates Baidu’s display of 10 pieces of data per page, and implements the algorithm of centering the current page.

<!DOCTYPE html>
<html>

 <head>
  <meta charset="UTF-8">
  <title>BootStrap+AngularJS分页显示 </title>
  <script type="text/javascript" src="../js/jquery.js"></script>
  <script type="text/javascript" src="../js/bootstrap.js"></script>
  <link rel="stylesheet" href="../css/bootstrap/bootstrap.css" rel="external nofollow" />
  <script type="text/javascript" src="../js/angular.min.js"></script>
 </head>

 <body ng-app="paginationApp" ng-controller="paginationCtrl">
  <table class="table table-bordered">
   <tr>
    <th>序号</th>
    <th>商品编号</th>
    <th>名称</th>
    <th>价格</th>
   </tr>
   <tr ng-repeat="product in products">
    <td>{{$index+1}}</td>
    <td>{{product.id}}</td>
    <td>{{product.name}}</td>
    <td>{{product.price}}</td>
   </tr>
  </table>
  <p>
   <ul class="pagination pull-right">
    <li>
     <a href ng-click="prev()">上一页</a>
    </li>
    <li ng-repeat="page in pageList" ng-class="{active: isActivePage(page)}">
     <a href ng-click="selectPage(page)">{{page}}</a>
    </li>
    <li>
     <a href ng-click="next()">下一页</a>
    </li>
   </ul>
  </p>
 </body>

 <script type="text/javascript ">
  var paginationApp = angular.module("paginationApp", []);
  paginationApp.controller("paginationCtrl", ["$scope", "$http",
   function($scope, $http) {![现的效果](实现的效果1.jpg)![现的效果](实现的效果1.jpg)
    // 分页组件 必须变量
    $scope.currentPage = 1; // 当前页 （请求数据）
    $scope.pageSize = 4; // 每页记录数 （请求数据）
    $scope.totalCount = 0; // 总记录数 （响应数据）
    $scope.totalPages = 0; // 总页数 （根据 总记录数、每页记录数 计算 ）
    
    // 要在分页工具条显示所有页码 
    $scope.pageList = new Array();
    
    
    // 加载上一页数据
    $scope.prev = function(){
     $scope.selectPage($scope.currentPage-1);
    }
    
    // 加载下一页数据 
    $scope.next = function(){
     $scope.selectPage($scope.currentPage+1);
    }
    
    // 加载指定页数据 
    $scope.selectPage = function(page) {
     // page 超出范围 
     if($scope.totalPages != 0 && (page < 1 || page > $scope.totalPages)){
      return ;
     }
     
     $http({
      method: &#39;GET&#39;,
      url: &#39;6_&#39;+page+&#39;.json&#39;,
      params: {
       "page" : page , // 页码
       "pageSize" : $scope.pageSize // 每页记录数 
      }
     }).success(function(data, status, headers, config) {
      // 显示表格数据 
      $scope.products = data.products;
      
      // 根据总记录数 计算 总页数 
      $scope.totalCount = data.totalCount;
      $scope.totalPages = Math.ceil($scope.totalCount / $scope.pageSize);
      // 更新当前显示页码 
      $scope.currentPage = page ;
      
      // 显示分页工具条中页码 
      var begin ; // 显示第一个页码
      var end ; // 显示最后一个页码 
      
      // 理论上 begin 是当前页 -5 
      begin = $scope.currentPage - 5 ;
      if(begin < 1){ // 第一个页码 不能小于1 
       begin = 1 ;
      }
      
      // 显示10个页码，理论上end 是 begin + 9
      end = begin + 9; 
      if(end > $scope.totalPages ){// 最后一个页码不能大于总页数
       end = $scope.totalPages; 
      }
      
      // 修正begin 的值, 理论上 begin 是 end - 9
      begin = end - 9;
      if(begin < 1){ // 第一个页码 不能小于1 
       begin = 1 ;
      }
      
      
      // 要在分页工具条显示所有页码 
      $scope.pageList = new Array();
      // 将页码加入 PageList集合
      for(var i=begin ; i<= end ;i++){
       $scope.pageList.push(i);
      }
 
     }).error(function(data, status, headers, config) {
      // 当响应以错误状态返回时调用
      alert("出错，请联系管理员 ");
     });
    }
    
    // 判断是否为当前页 
    $scope.isActivePage = function(page) {
     return page === $scope.currentPage;
    }
    
    // 初始化，选中第一页
    $scope.selectPage(1);
   }
  ]);
 </script>
</html>

1_1.json

{
 "totalCount":100,
 "products":[
  {"id":"1001","name":"苹果手机","price":"5000"},
  {"id":"1002","name":"三星手机","price":"6000"}

 ]

}

1_2.json

{
 "totalCount":100,
 "products":[
  {"id":"1001","name":"华为手机","price":"5000"},
  {"id":"1002","name":"vivo手机","price":"6000"}

 ]
}

The effect achieved is as shown in the figure:

Problems encountered: In the following code, if begin is accidentally written as 0, the page number will have a bug starting from 0

// 将页码加入 PageList集合
for(var i=begin ; i<= end ;i++){
 $scope.pageList.push(i);
}

As shown in the figure below

The reason is that begin represents the first page number displayed on the page. If i starts traversing from 0, Then the first element in the pageList array is 0, so in the process of traversing the page number in angularJS as follows, it will start traversing from 0. On the page, it will be displayed starting from 0

<li ng-repeat="page in pageList" ng-class="{active: isActivePage(page)}">
     <a href ng-click="selectPage(page)">{{page}}</a>
</li>

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