AngularJS NG重复手柄空单的情况下 [英] AngularJS ng-repeat handle empty list case

问题描述

我认为这将是一个很平常的事情，但我找不到如何处理它AngularJS。比方说，我有事件的列表，并希望与AngularJS输出他们，那么这就是pretty容易：

I thought this would be a very common thing, but I couldn't find how to handle it in AngularJS. Let's say I have a list of events and want to output them with AngularJS, then that's pretty easy:

<ul>
    <li ng-repeat="event in events">{{event.title}}</li>
</ul>

但我怎么处理案件时，列表是空的？我想有一个消息框在地方名单是像无事件或类似。这将接近的唯一的事情是 NG-开关与 events.length （我怎么检查是否空当一个对象，而不是一个数组？），但真正唯一的选择我？

But how do I handle the case when the list is empty? I want to have a message box in place where the list is with something like "No events" or similar. The only thing that would come close is the ng-switch with events.length (how do I check if empty when an object and not an array?), but is that really the only option I have?

推荐答案

您可以使用 ngShow 。

<li ng-show="!events.length">No events</li>

请参阅例如。

或者你也可以使用 ngHide

<li ng-hide="events.length">No events</li>

请参阅例如。

有关对象，你可以测试 Object.keys 。

For object you can test Object.keys.

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