Angularjs实现分页和分页算法的示例代码

对于大多数web应用来说显示项目列表是一种很常见的任务。通常情况下,我们的数据会比较多,无法很好地显示在单个页面中。在这种情况下,我们需要把数据以页的方式来展示。

页面展示效果:

Angularjs实现分页和分页算法的示例代码_第1张图片

页面HTML代码:

选择 企业名称 企业地址 状态
{{l.name}} {{l.address}} {{l.status_str}}
共:{{count}} 条

Js代码:

var app = angular.module("myApp",[]);   
app.controller("map_ctrl",function($scope,$http,$location){ 
  //配置 
  $scope.count = 0; 
  $scope.p_pernum = 10; 
  //变量 
  $scope.p_current = 1; 
  $scope.p_all_page =0; 
  $scope.pages = []; 
  //初始化第一页 
  _get($scope.p_current,$scope.p_pernum,function(){ 
    alert("我是第一次加载"); 
  }); 
  //获取数据 
  var _get = function(page,size,callback){ 
    $http.get("xxx.html?status=0&page="+page+"&size="+size).success(function(res){ 
      if(res&&res.status==1){ 
        $scope.count=res.count; 
        $scope.list=res.list; 
        $scope.p_current = page; 
        $scope.p_all_page =Math.ceil($scope.count/$scope.p_pernum); 
        reloadPno(); 
        callback(); 
      }else{ 
        alert("加载失败"); 
      } 
    });  
  } 
  //单选按钮选中 
  $scope.select= function(id){ 
    alert(id); 
  } 
  //首页 
  $scope.p_index = function(){ 
    $scope.load_page(1); 
  } 
  //尾页 
  $scope.p_last = function(){ 
    $scope.load_page($scope.p_all_page); 
  } 
  //加载某一页 
  $scope.load_page = function(page){ 
    _get(page,$scope.p_pernum,function(){ }); 
  }; 
  //初始化页码 
  var reloadPno = function(){ 
     $scope.pages=calculateIndexes($scope.p_current,$scope.p_all_page,8); 
    }; 
//分页算法 
var calculateIndexes = function (current, length, displayLength) { 
  var indexes = []; 
  var start = Math.round(current - displayLength / 2); 
  var end = Math.round(current + displayLength / 2); 
  if (start <= 1) { 
    start = 1; 
    end = start + displayLength - 1; 
    if (end >= length - 1) { 
      end = length - 1; 
    } 
  } 
  if (end >= length - 1) { 
    end = length; 
    start = end - displayLength + 1; 
    if (start <= 1) { 
      start = 1; 
    } 
  } 
  for (var i = start; i <= end; i++) { 
    indexes.push(i); 
  } 
  return indexes; 
 }; 
  
}); 

分页算法:

current :当前页码,length:总页码,displayLength:显示长度      @return  array[1,2,3,4,5,6,7,8]     

var calculateIndexes = function (current, length, displayLength) { 
  var indexes = []; 
  var start = Math.round(current - displayLength / 2); 
  var end = Math.round(current + displayLength / 2); 
  if (start <= 1) { 
    start = 1; 
    end = start + displayLength - 1; 
    if (end >= length - 1) { 
      end = length - 1; 
    } 
  } 
  if (end >= length - 1) { 
    end = length ; 
    start = end - displayLength + 1; 
    if (start <= 1) { 
      start = 1; 
    } 
  } 
  for (var i = start; i <= end; i++) { 
    indexes.push(i); 
  } 
  return indexes; 
}; 

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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