AngularJS 未定义的过滤器参数

Question

我在 table 数据中设置了搜索过滤器，但参数始终是 'undefined'

我像这样将它与 ng-repeat 一起使用

<input type="text" ng-model="searchText"  class="form-control" translate="Search">
<tr ng-repeat="g in StudentList  | SearchFilter:searchText >

和过滤器：

app.filter('SearchFilter', function () {
    return function (input, word) {
        if (word == undefined || word == '')
            return input;
        // filtering ...
    }
});

我在 chrome 浏览器上使用 AngularJS v1.5.8

Answer 1

是的，根据您在 tr 元素中的过滤器，它只接受一个参数。如果要传递两个参数，则应将过滤器更改为，

 <tr ng-repeat="g in StudentList  | filter:filterUser(searchText, word)>

 $scope.filterUser = function(input, word) {
 return function (input, word) {
        if (word == undefined || word == '')
            return input;
        // filtering ...
    }
}

但我不明白为什么在这种情况下您需要自定义过滤器，您可以这样做，

<input type="text" ng-model="searchText" >
<tr ng-repeat="g in StudentList  | filter:searchText">

Answer 2

要过滤普通对象，您不需要自定义过滤器。像这个例子一样使用 filter:searchText：

var app=angular.module('app',[])
app.controller('Ctrl',function($scope){
$scope.StudentList=[
  { id: 1, name: 'John', address: 'Highway 71'},
  { id: 2, name: 'Peter', address: 'Lowstreet 4'},
  { id: 3, name: 'Amy', address: 'Apple st 652'},
  { id: 4, name: 'Hannah', address: 'Mountain 21'},
  { id: 5, name: 'Michael', address: 'Valley 345'},
  { id: 6, name: 'Sandy', address: 'Ocean blvd 2'},
  { id: 7, name: 'Betty', address: 'Green Grass 1'},
  { id: 8, name: 'Richard', address: 'Sky st 331'},
  { id: 9, name: 'Susan', address: 'One way 98'},
  { id: 10, name: 'Vicky', address: 'Yellow Garden 2'},
  { id: 11, name: 'Ben', address: 'Park Lane 38'},
  { id: 12, name: 'William', address: 'Central st 954'},
  { id: 13, name: 'Chuck', address: 'Main Road 989'},
  { id: 14, name: 'Viola', address: 'Sideway 1633'}
];
})

table{
border-collapse:collapse;
width:100%
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
<div ng-app="app" ng-controller="Ctrl">
  <input ng-model="searchText">
  <table border=1>
    <tr><th>Id</th><th>Name</th><th>Ardress</th></tr>
    <tr ng-repeat="g in StudentList|filter:searchText"><td>{{g.id}}</td><td>{{g.name}}</td><td>{{g.address}}</td></tr>
  </table>
</div>

AngularJS 未定义的过滤器参数

AngularJS Filter parameter with undefined

javascript

angularjs

angularjs-ng-repeat

angularjs-filter