Angular JS通过无序列表中的2个数组重复

Question

I got this 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>

Projects and descriptions are Arrays in my Controller. Now I'm getting for each item in my Project Array a listitem, but how can I iterate the description as well?

Like in the first Iteration:

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

And in the next Iteration for the next p in Projects:

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

Thanks in regard!

Answer 1

Use track by in ng-repeat

<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>