AngularJS:当值大于时,ng-repeatfilter
我有一个简单的ng-repeat,它会抛出数据,它显示的一个字段是NumberOfStamps:
<tr ng-repeat-start="list in Data.Items "> <td><a href=" {[{list.Title}]} {[{list.ForeName}]} {[{list.SurName}]}</a></td> <td>(Date of Birth {[{list.Dob}]})</td> <td>{[{list.NumberOfStamps}]} stamps</td> </tr>
示例输出:
Mr Adam Happy Date of Birth 01/6/1984 16 stamps Mr Adam Sad Date of Birth 24/11/1975 0 stamps Mr Adam Green Date of Birth 02/1/1963 1 stamps Mr Adam Red Date of Birth 21/1/1951 12 stamps Mr Adam Blue Date of Birth 28/10/1998 0 stamps Mr Adam Brown Date of Birth 25/9/2010 0 stamps Mr Adam Black Date of Birth 24/8/1954 21 stamps Mr Adam Violet Date of Birth 17/5/1942 54 stamps
我怎样才能修改这个ng-repeat只显示NumberOfStams> 0的logging? 我试过了:
<tr ng-repeat-start="list in Data.Items | filter:{NumberOfStamps > 0}"> <td><a href=" {[{list.Title}]} {[{list.ForeName}]} {[{list.SurName}]}</a></td> <td>(Date of Birth {[{list.Dob}]})</td> <td>{[{list.NumberOfStamps}]} stamps</td> </tr>
预期产出:
Mr Adam Happy Date of Birth 01/6/1984 16 stamps Mr Adam Green Date of Birth 02/1/1963 1 stamps Mr Adam Red Date of Birth 21/1/1951 12 stamps Mr Adam Black Date of Birth 24/8/1954 21 stamps Mr Adam Violet Date of Birth 17/5/1942 54 stamps
在相关范围上创build一个谓词函数:
$scope.greaterThan = function(prop, val){ return function(item){ return item[prop] > val; } }
作为第一个参数,它在对象上取一个属性名称。 第二个参数是一个整数值。
像这样在你的视图中使用它:
<tr ng-repeat-start="list in Data.Items | filter: greaterThan('NumberOfStamps', 0)">
演示
你可以使用ng创build一个filter,如下所示:
<li ng-repeat="seller in sellers" ng-if="seller.sales > 0" >{{ seller.name }}</li>
<tr ng-repeat-start="Data.Items in list = ( Data.Item | filter:{NumberOfStamps : !0}"> <td><a href=" {[{list.Title}]} {[{list.ForeName}]} {[{list.SurName}]}</a></td> <td>(Date of Birth {[{list.Dob}]})</td> <td>{[{list.NumberOfStamps}]} stamps</td> </tr>
一种可能的方法是使用ng-if从DOM中删除不符合标准的项目
<tr ng-repeat-start="list in Data.Items "> <td ng-if="list.NumberOfStamps > 0"><a href=" {[{list.Title}]} {[{list.ForeName}]} {[{list.SurName}]}</a></td> <td ng-if="list.NumberOfStamps > 0">(Date of Birth {[{list.Dob}]})</td> <td ng-if="list.NumberOfStamps > 0">{[{list.NumberOfStamps}]} stamps</td> </tr>
因为你不能在tr中有一个div,所以你必须要ng – 如果td是单独的,如果你有很多的td
看看这个堆栈溢出的答案。 AngularJS – 如何使用ng-repeat构造自定义filter以有条件地返回项目,这清楚地解释了如何创build自定义angular度filter以便与ng-repeat一起使用。 一旦你明白这一点,你将能够基本上从ng-repeat
滤除任何东西!