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Angularjs中如何使用filterFilter函数过滤

时间:2021-07-01 10:21:17 帮助过:7人阅读

AngularJS的filter,中文名“过滤器”是用来过滤变量的值,或者格式化输出,得到自己所期望的结果或格式的东东。AngularJS中有一个filterFilter函数用来对集合过滤,非常方便。

源代码大致如下:

  1. function filterFilter(){
  2. return function(aray, expression comparator){
  3. if(!isArray(array)) return array;
  4. var comparatorType = typeof(comparator),
  5. predicates = [],
  6. evaluatedObjects = [];
  7. predicates.check = function(value){
  8. for(var j = 0; j < predicates.length; jii){
  9. if(!predicates[j](value){
  10. return false;
  11. })
  12. }
  13. return true;
  14. }
  15. if(comparatorType != 'function'{
  16. if(comparatorType === 'boolean' && comparator){
  17. comparator = function(obj, text){
  18. return angular.equals(obj, text);
  19. }
  20. } else {
  21. comparator = function(obj, text){
  22. ...
  23. }
  24. }
  25. })
  26. }
  27. }

controller部分如下:

  1. angular
  2. .module('app')
  3. .controller('MainCtrl', ['$scope',
  4. function($scope) {
  5. $scope.users = $scope.users = [
  6. {name: '', email: '', joined: 2015-1-1}
  7. ];
  8. $scope.filter = {
  9. fuzzy: '',
  10. name: ''
  11. };
  12. ...
  13. }]);

搜索所有任意字段

  1. <input type="text" ng-model="filter.any" >
  2. <tr ng-repeat="user in users | filter: filter.any">
  3. <td>{{user.name}}</td>
  4. <td>{{user.email}}</td>
  5. <td>{{user.joined | date}}</td>
  6. </tr>

搜索某个字段

  1. <input type="text" ng-model="filter.name">
  2. <tr ng-repeat="user in users
  3. | filter: filter.any
  4. | filter: {name: filter.name}">
  5. <td>{{user.name}}</td>
  6. <td>{{user.email}}</td>
  7. <td>{{user.joined | date}}</td>
  8. </tr>

如果想name字段完全匹配:

  1. <tr ng-repeat="user in users
  2. | filter: filter.any
  3. | filter: {name: filter.name}:true">
  4. <td>{{user.name}}</td>
  5. <td>{{user.email}}</td>
  6. <td>{{user.joined | date}}</td>
  7. </tr>

搜索时间段

contrlller部分修改为:

  1. angular
  2. .module('app')
  3. .controller('MainCtrl', ['$scope',
  4. function($scope) {
  5. $scope.users = $scope.users = [
  6. {name: '', email: '', joined: 2015-1-1}
  7. ];
  8. $scope.filter = {
  9. fuzzy: '',
  10. name: ''
  11. };
  12. $scope.minDate = new Date('January 1, 2000');
  13. $scope.maxDate = new Date();
  14. $scope.min = function(actual, expected) {
  15. return actual >= expected;
  16. };
  17. $scope.max = function(actual, expected) {
  18. return actual <= expected;
  19. };
  20. }]);

页面部分为:

  1. <input type="text" ng-model="fromDate" data-min-date="{{minDate}}">
  2. <input type="text" ng-model="untilDate" data-max-date="{{maxDate}}">
  3. <tr ng-repeat="user in users
  4. | filter: filter.any
  5. | filter: {name: filter.name}
  6. | filter: {joined: untilDate}:max
  7. | filter: {joined: beforeDate}:min">
  8. <td>{{user.name}}</td>
  9. <td>{{user.email}}</td>
  10. <td>{{user.joined | date}}</td>
  11. </tr>

以上所述是小编给大家分享的Angularjs中如何使用filterFilter函数过滤的相关知识,希望对大家有所帮助。

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