我正在尝试显示“未找到书籍！” 如果角度过滤器在 AngularJs 中没有返回结果，则为行。
但我无法以某种方式使其工作。这是我的html代码：
<div class='col-md-6'>
<div class='row'>
<div class="col-md-12">
<div class="input-group">
<input type='text' ng-model='search' class='form-control' aria-describedby="basic-addon2">
<span class="input-group-btn">
<button class="btn btn-default" type="button"><i class='glyphicon glyphicon-search'></i></button>
</span>
</div>
</div>
</div>
<div class='row' id='search-table'>
<div class="col-md-12">
<table class='table table-bordered table-hover table-collapse' ng-init="books = [{
title : 'The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing',
author : 'Marie Kondo',
price : '9.68'
},
{
title : 'Quieting Your Heart: 6-Month Bible-Study Journal',
author : 'Darlene Schacht',
price : '7.14'
},
{
title : 'First 100 Words',
author : 'Roger Priddy',
price : '3.19'
}]">
<thead>
<th> TITLE </th>
<th> AUTHOR </th>
<th> PRICE </th>
</thead>
<tbody>
<tr ng-repeat="book in books | filter:search">
<td> {{ book.title }} </td>
<td> {{ book.author }} </td>
<td> {{ book.price }} </td>
</tr>
<tr class='info' ng-show="!books.length">
<td colspan=3> <i class='glyphicon glyphicon-info-sign '></i> No Books Found </td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
我错过了什么吗？提前致谢！