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Filter Custom filter to remove duplicates (with code)

php中世界最好的语言Original: 2018-06-06 17:47:202606browse

This time I bring you Filter custom filter deduplication (with code). What are the precautions for Filter custom filter deduplication? Here is a practical case, let’s take a look.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title> ng-repeat去除重复</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<p ng-app="myApp" ng-controller="myCtrl">
  <p ng-repeat="x in items | unique:&#39;id&#39;">
    {{x.id}}---{{x.name}}
  </p>
</p>
<script>
  //AngularJs 自定义过滤器
  //1.使用过滤器，去除重复
  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];
    //当前unique 的过滤只针对，对象数组过滤
    $scope.items = [
      { id: 1, name: 'zhangsan' },
      { id: 2, name: 'lisi' },
      { id: 1, name: 'zhangsan' },
    ];
  });
</script>
</body>
</html>

Run results:

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Filter Custom filter to remove duplicates (with code)

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