获取引导下拉列表中选择的项目与Angular4
问题描述:
我建立动态下拉引导部件,如:获取引导下拉列表中选择的项目与Angular4
<div class="dropdown" >
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">
Selectionner un filtre...<span class="caret"></span>
</button>
<ul class="dropdown-menu" >
<li *ngFor="let v of items" (click) = "onSelect($event);"> <-- ??????
<a class="dropdown-item" href="#">{{ v.val }}</a>
</li>
</ul>
</div>
我怎样才能获得所选项目的索引与我ONSELECT()函数? ($事件是的MouseEvent结构)
答
声明一个指数ngFor:
<li *ngFor="let v of items; let i = index" (click) = "onSelect($event, i);">
<a class="dropdown-item" href="#">{{ v.val }}</a>
</li>