我怎样才能获得一个角度的结果数组 "|过滤器"变量中的表达式? [英] How can I obtain the result array of an angular "| filter" expression in a variable?

问题描述

在 angular 中，您可以编写过滤器表达式，例如

In angular, you can write filter expressions like

<input type="text" ng-model="query">

<table>
    <tr ng-repeat="phone in phones | filter: query">
       <td>{{phone.vendor}}</td>
       <td>{{phone.model}}</td>
    </tr>
</table>

并且它将更新表格以仅显示与您在 input 中输入的 query 文本匹配的手机.

and it will update the table to show only the phones which match the query text you enter into the input.

如何获取过滤器对应的结果数组，例如当前显示的 [phone object] 在变量(例如范围变量)中?

How can I get the corresponding result array of the filter, e.g. the [phone object]s that are currently displayed, in a variable (e.g. a scope variable)?

推荐答案

您实际上可以在角度表达式中为作用域分配新变量.因此，最简单的解决方案是执行 <tr ng-repeat="phone in (filteredPhones = (phones | filter: query))">.filteredPhones 现在是当前范围内的一个变量 - 请参阅这个 plnkr 示例.

You can actually assign new variables to the scope in an angular expression. So the simplest solution would be to do <tr ng-repeat="phone in (filteredPhones = (phones | filter: query))">. filteredPhones is now a variable in the current scope - see this plnkr example.

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