學習Angularjs分頁指令_AngularJS

在項目中許多頁面都用到了分頁，然後每個頁面都有許多重複的分頁代碼，於是自己寫了一份簡易的分頁指令，簡化頁面的代碼，且容易維護，寫在部落格中當做備份，方便以後查閱。
以下是定義指令及其應用的步驟：

1.指令定義
定義一個js檔案，page-directive.js，用來寫分頁的指令代碼，這個檔案中包含了分頁的模板，以下是js檔案中的所有代碼：

'use strict';(function () { angular.module('template/pageInit/pageInit.html', []).run([  '$templateCache',function($templateCache) {   $templateCache.put('template/pageInit/pageInit.html',    '<ul class="pagination-main">\n'+    ' <li class="prev-page" ng-class="{disabled:pageData.currentPage==1}" title="首頁">\n'+    '  <a href="javascript:void(0);" ng-click="on_loadPage(1)"><span class="fa fa-fast-backward"></span></a>\n'+    ' </li>\n'+    ' <li class="prev-page" ng-class="{disabled:pageData.currentPage==1 }">\n'+    '  <a href="javascript:void(0);" ng-click="on_prev()" title="上一頁"><span class="fa fa-step-backward"></span></a>\n'+    ' </li>\n'+    ' <li class="data-page" ng-repeat="page in pageData.pages" ng-class="{\'first-page\': page==1, \'last-page\': page==pageData.totalPage}">\n'+    '  <a ng-if="page!=\'...\'" href="javascript:void(0);" ng-class="{\'bg-custom\': page==pageData.currentPage}" ng-click="on_loadPage(page, tabData)">{{ page }}</a>\n'+    '  <a ng-if="page==\'...\'" href="javascript:void(0);" ng-class="{\'bg-custom\': page==pageData.currentPage}" ng-click="">{{ page }}</a>\n'+    ' </li>\n'+    ' <li class="next-page" ng-class="{disabled:pageData.currentPage==pageData.totalPage}">\n'+    '  <a href="javascript:void(0);" ng-click="on_next()" title="下一頁"><span class="fa fa-step-forward"></span></a>\n'+    ' </li>\n'+    ' <li class="skip-page"><div><input type="text" placeholder="" ng-model="inpage">\n'+    '  <input type="button" value="跳轉" ng-click="on_loadPage(inpage)"></div>\n'+    ' </li>\n'+    ' <li class="data-num"><a class="cursor-text" href="#"><span>共{{pageData.count}}條</span></a></li>\n'+    '</ul>\n'+    ''   );  } ]); angular.module('pageInit', ['template/pageInit/pageInit.html'])  .directive('pageInit',['pageinitTemplate', function(pageinitTemplate) {   return {    restrict  : 'AE',    templateUrl: function (tElement, tAttrs) {     return tAttrs.templateUrl || pageinitTemplate.getPath();    },    replace  : true,    scope   : {     pageData    : '=',     prev      : '&',     next      : '&',     loadPage    : '&'    },    link      : function(scope, element, attrs) {     scope.on_prev = function() {      if(scope.prev) {       scope.prev();      }     };     scope.on_next = function() {      if(scope.next) {       scope.next();      }     };     scope.on_loadPage = function(page) {      scope.inpage = undefined;      if(scope.loadPage) {       scope.loadPage({page: page});      }     };    }   };  }])  .provider('pageinitTemplate', function () {   var templatePath = 'template/pageInit/pageInit.html';   this.setPath = function (path) {    templatePath = path;   };   this.$get = function () {    return {     getPath: function () {      return templatePath;     }    };   };  });}).call(window);

2.分頁樣式控制
建議寫在單獨的.css檔案中，首先建立pageSync.css檔案，以下是具體樣式

.pagination-main { display: inline-block; padding-left: 0; margin: 0 0; border-radius: 4px; vertical-align: middle;}.pagination-main li.prev-page > a { border: 0;}.pagination-main li.next-page > a { border: 0; border-left: 1px; margin-left: 0;}.pagination-main li.first-page > a { border-top-left-radius: 0; border-bottom-left-radius: 0;}.pagination-main li.last-page > a { border-top-right-radius: 0; border-bottom-right-radius: 0;}.pagination-main li div { width: 80px;border: 1px solid #DDDDDD;background-color: #ffffff;float: left;padding: 0;}.pagination-main li.skip-page input[type='text'] { width: 24px;height: 20px;border: 0;text-align: center;}.pagination-main li.skip-page input[type='button'] { padding: 0 4px 1px 10px;border: 0;border-left: 1px solid #dddddd;background-color: #ffffff}.pagination-main li.data-num > a { border: 0; margin-left: 0;}.pagination-main > li { display: inline;}.pagination-main > li:first-child > a,.pagination-main > li:first-child > span { /*margin-left: 0; border-top-left-radius: 4px; border-bottom-left-radius: 4px;*/}.pagination-main > .active > a,.pagination-main > .active > span,.pagination-main > .active > a:hover,.pagination-main > .active > span:hover,.pagination-main > .active > a:focus,.pagination-main > .active > span:focus { z-index: 2; color: #fff; cursor: default; background-color: #428bca; border-color: #428bca;}.pagination-main > li > a,.pagination-main > li > span { position: relative; float: left; /*padding: 6px 12px;*/ padding: 1px 8px; margin-left: -1px; line-height: 1.42857143; color: #428bca; text-decoration: none; background-color: #fff; border: 1px solid #ddd;}.pagination-main > .disabled > span,.pagination-main > .disabled > span:hover,.pagination-main > .disabled > span:focus,.pagination-main > .disabled > a,.pagination-main > .disabled > a:hover,.pagination-main > .disabled > a:focus { color: #999; cursor: not-allowed; background-color: #fff; border-color: #ddd;}

3.分頁查詢方法
我在factory中自訂了分頁查詢的方法，共用，方便代碼的維護。在angular中與背景互動預設是非同步，我這裡寫成同步查詢了，首先定義js檔案pageSync.service.js，以下是factory的全部內容：

'use strict';angular.module('app').factory('PageSync', ['$http', '$q', function Page($http, $q) { var rowCollectionPage = []; var totalPage = 1; var pages = []; var endPage = 1; var load = function(url, currentPage, pageSize,deferred) {  var json = {rowCollectionPage: [], totalPage: 1, currentPage:currentPage ? currentPage:1, pages: []};  $http.get(url).success(function(rows) {   rowCollectionPage = setPageRow(rows.list, pageSize);   // 擷取總頁數   totalPage = Math.ceil(rows.count / pageSize);   endPage = totalPage;   // 產生數字連結   if (totalPage <= 7) {    pages = getPagesLow(totalPage);   } else {    pages = getPagesHigh(currentPage, totalPage);   }   json.rowCollectionPage = rowCollectionPage;   json.totalPage = totalPage==0 ? 1 : totalPage;   json.currentPage = currentPage;   json.pages = pages;   json.count = rows.count;   json.pageSize = pageSize;   /**    * 自訂欄位，初始化的時候為before，只要經過該分頁方法，則欄位值變為after    * before表示未經過該分頁方法，after表示經過該分頁方法，    * 前台頁面載入的規則：為before時表示表格無資料，為after且pataData.count==0時無資料，否則視為有資料，    * 也可以說是記錄的一個時間狀態（訪問資料前及返回資料後）    */   json.loadTime = 'after';   deferred.resolve(json);  });  return deferred.promise; }; // 總頁數小於等於7時 顯示所有的頁數 var getPagesLow = function(totalPage) {  var temp = [];  for (var i=1; i<totalPage+1; i++) {   temp.push(i);  }  return temp; }; // 總頁數大於7時 根據當前頁擷取7個頁碼數 var getPagesHigh = function(currentPage, totalPage) {  var temp = [];  if (currentPage < 4) {   temp = [1, 2, 3, 4, 5, '...', totalPage];  } else if ((totalPage - currentPage) <= 3) {   temp = [    totalPage - 6, totalPage - 5, totalPage - 4,    totalPage - 3, totalPage - 2, totalPage - 1, totalPage   ];  } else {   temp = [    currentPage - 2, currentPage - 1, currentPage,    currentPage + 1, currentPage + 2, '...', totalPage   ];  }  return temp; }; // 項目中table的高度是根據瀏覽器視窗的高度計算的來的，是動態 // 因為要把分頁固定在table最下方，所以無資料的用空行進行代替 var setPageRow = function(rowArr, pageSize) {  var temp = [];  if (rowArr != undefined) {   for (var i = 0; i < rowArr.length; i++) {    temp.push(rowArr[i]);   }   for (var j = 0; j < pageSize - rowArr.length; j++) {    temp.push({});   }  } else {   for (var k = 0; k < pageSize; k++) {    temp.push({});   }  }  return temp; }; return {  load: function(url, currentPage, pageSize) {   var deferred = $q.defer();   url += '&' + currentPage + '&' + pageSize;   return load(url, currentPage, pageSize, deferred);  },  next: function(url, currentPage, pageSize) {   var deferred = $q.defer();   if (currentPage < endPage) {    currentPage++;   }   url += '&' + currentPage + '&' + pageSize;   return load(url, currentPage, pageSize, deferred);  },  prev: function(url, currentPage, pageSize) {   var deferred = $q.defer();   currentPage--;   url += '&' + currentPage + '&' + pageSize;   return load(url, currentPage, pageSize, deferred);  },  loadPage: function(url, currentPage, pageSize, page) {   var deferred = $q.defer();   if (currentPage != page) {    currentPage = page;    url += '&' + currentPage + '&' + pageSize;    return load(url, currentPage, pageSize, deferred);   }  } }}]);

4.使用指令

1）.頁面上的代碼：

My Code中分頁是寫在table中的tfoot裡面了，prev()、next()、loadPage(page)均為在頁面對應的controller中定義的方法

<table><thead> <tr>  <th>序號</th>  <th>列名1</th>  <th>列名2</th>  <th style="width: 150px;text-align: center;">操作</th> </tr></thead><tbody> <tr ng-if="!noTableData" ng-repeat="row in pageData.rowCollectionPage">  <td>{{!!row.id ? $index+1+(pageData.currentPage-1)*pageSize : ''}}</td>  <td>{{row.args1}}</td>  <td>{{row.args2}}</td>  <td style="text-align: center;"><a href='#'>修改</a></td> </tr> <tr ng-if="noTableData" ng-repeat="data in pageData.rowCollectionPage">  <td ng-if="$index == 0" colspan="4" style="text-align: center;">沒有資料！</td>  <td ng-if="$index != 0" colspan="4"></td> </tr> </tbody><tfoot> <tr>  <td style="text-align: center;" colspan="6">   <div>    <page-init page-data="pageData" prev="prev()" next="next()" load-page="loadPage(page)"></page-init>   </div>  </td> </tr></tfoot></table>

2）.controller中的代碼

首先要引用factory，將PageSync在controller中引用，如下：

angular.module('app').controller('MyCtrl', function(PageSync) {});

在分頁查詢之前要做一些準備工作：

//pageData中設定分頁資料集合、總頁數、頁碼集合、資料總數，loadTime為自訂的參數，用來記錄時間狀態（訪問資料前及返回資料後）
$scope.pageData = {rowCollectionPage: [], totalPage: 1, currentPage:1, pages: [],count: 0, loadTime: 'before'};
// 這裡用來計算table的高度，根據實際情況來。
$scope.tabHeight = $scope.height-48-37-10-42-5;
// 計算實際中一頁有多少行資料
$scope.pageSize = parseInt(($scope.tabHeight-15-34-34-39)/34);

然後再controller中寫如下的方法

// 分頁查詢$scope.load = function(row) { $scope.surgeonPageData.rowCollectionPage = Common.setPageRow([],$scope.pageSize); $scope.noSurgeonData = false; $scope.surgeonPageData.loadTime = 'before'; PageSync.load(url, $scope.pageData.currentPage, $scope.pageSize).then(function(data) {  $scope.pageData = data;  if(($scope.pageData.loadTime=='after'&& $scope.pageData.count==0) || $scope.pageData.loadTime=='before') {   $scope.noTableData = true;  } });};// 下一頁$scope.next = function() { if ($scope.pageData.currentPage < $scope.pageData.totalPage) {  PageSync.next(url, $scope.pageData.currentPage, $scope.pageSize).then(function(data) {   $scope.pageData = data;  }); }};// 上一頁$scope.prev = function() { if ($scope.pageData.currentPage > 1) {  PageSync.prev(url, $scope.pageData.currentPage, $scope.pageSize).then(function (data) {   $scope.pageData = data;  }); }};// 點擊頁碼跳轉$scope.loadPage = function(page) { $scope.inpage = undefined; var intPage; if (typeof page == 'string') {  if(page!="") {   intPage = parseInt(page, 10);  } else {   intPage = 0;  } } else {  intPage = page; } if ($scope.pageData.totalPage <= 1) { } else if (intPage == undefined || intPage == null) {  alert('請填寫跳轉頁碼！'); } else if(intPage <= 0 || intPage > $scope.pageData.totalPage) {  alert('跳轉頁碼應大於0,小於總頁數'+$scope.pageData.totalPage); } else if ($scope.pageData.currentPage != page) {  PageSync.loadPage(url, $scope.pageData.currentPage, $scope.pageSize, page).then(function (data) {   $scope.pageData = data;  }); }};

5.結果
最終的實現效果如下圖：

以上就是本文的全部內容，希望對大家的學習有所協助，也希望大家多多支援雲棲社區。