如何在querytext的长度等于2时开始过滤

Question

如何在querytext的长度等于2时才能开始过滤？

我有这个代码,我不知道如何在querytext.length> = 2时开始过滤

<input type="search" ng-model="querytext">
<ul>
    <li ng-repeat="value in filteredList | filter:querytext>{{value.Name}}</li>
</ul>
$scope.filteredList =[{Id:1,Name:"Soul"},{Id:2,Name:"Croft"}];

Answer 1

添加ng-minlength="2"到<input>元素.

<input type="search" ng-model="querytext" ng-minlength="2" />
<!--                                      ^^^^^^^^^^^^^^^^ -->