AngularJS使用Filter自定義過濾器控制ng-repeat去除重復功能示例

2019-11-19 13:59:09

字體：大中小

來源：轉載

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本文實例講述了AngularJS使用Filter自定義過濾器控制ng-repeat去除重復功能。分享給大家供大家參考，具體如下：

<!DOCTYPE html><html><head><meta charset="utf-8"><title>www.49028c.com ng-repeat去除重復</title><script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script></head><body><div ng-app="myApp" ng-controller="myCtrl">  <p ng-repeat="x in items | unique:'id'">    {{x.id}}---{{x.name}}  </p></div><script>  //AngularJs 自定義過濾器  //1.使用過濾器，去除重復  angular.module('common', []).filter('unique', function () {    return function (collection, keyname) {      console.info(collection);      console.info(keyname);      var output = [],        keys = [];      angular.forEach(collection, function (item) {        var key = item[keyname];        if (keys.indexOf(key) === -1) {          keys.push(key);          output.push(item);        }      });      return output;    }  });  var app = angular.module('myApp', ['common']);  app.controller('myCtrl', function ($scope) {    //$scope.items = [1, 2, 3,2];    //當前unique 的過濾只針對，對象數組過濾    $scope.items = [      { id: 1, name: 'zhangsan' },      { id: 2, name: 'lisi' },      { id: 1, name: 'zhangsan' },    ];  });</script></body></html>

運行結果：