Angular JS通过无序列表中的2个数组重复

Question

我得到这个HTML：

 <ul class="demo-list-three mdl-list">
    <li class="mdl-list__item mdl-list__item--three-line" ng-repeat="p in projects">
        <span class="mdl-list__item-primary-content">
            <i class="material-icons mdl-list__item-avatar">person</i>
            <span>{{p}}</span>
            <span class="mdl-list__item-text-body">
                {{descriptions[0]}}
            </span>
        </span>
        <span class="mdl-list__item-secondary-content">
            <a class="mdl-list__item-secondary-action" href="#"><i class="material-icons">star</i></a>
        </span>
    </li>
</ul>

项目和描述是我控制器中的数组。 现在，我为项目数组中的每个项目获得了一个列表项，但是如何也可以迭代该描述呢？

像第一个迭代一样：

<span>{{descriptions[0]}}</span>

在项目的下一个p的下一个迭代中：

<span>{{descriptions[1]}}</span>

谢谢！

Answer 1

在ng-repeat中使用track by

<ul class="demo-list-three mdl-list">
    <li class="mdl-list__item mdl-list__item--three-line" ng-repeat="p in projects track by $index">
        <span class="mdl-list__item-primary-content">
            <i class="material-icons mdl-list__item-avatar">person</i>
            <span>{{p}}</span>
            <span class="mdl-list__item-text-body">
                {{descriptions[$index]}}
            </span>
        </span>
        <span class="mdl-list__item-secondary-content">
            <a class="mdl-list__item-secondary-action" href="#"><i class="material-icons">star</i></a>
        </span>
    </li>
</ul>