如何在aurelia模板中有条件地添加类

我正在寻找一种将类动态添加到aurelia模板的方法。如果特定li可见，我必须添加一个活动类

范例

<section id="jobsCategoryContainer" class="jobsCategoryContainer">
    <h1>{{title}}</h1>
    <div *ngFor = "#slide of jobCategorySlides; #i = index" id="job-category-slide_{{i}}" class="job-category-slide" [ngClass]="{active: initialCarouselIndex == i}">
        <ul *ngFor = "#item of slide">
            <li class="jobDetails" *ngFor="#job of item; #i = index">
                <div>
                    <span id="{{job.name}}" class="jobName">{{ job.name }}</span>    
                </div>
                <div>
                    <span>{{job.noOfJobs}}</span>
                </div>  
            </li>
        </ul>    
    </div>
    <div>
        <a href="javascript:void(0)" (click)="updateJobsData($event ,false)" ng-value="Previous">Previous</a>
        <a href="javascript:void(0)" (click)="updateJobsData($event ,true)" ng-value="Next">Next</a>    
    </div>    
</section>

{{title}}


{{job.name}
{{job.noOfJobs}

我想在下面的代码中添加活动类

<div class="phs-widget-body">
                        <div class="phs-carousel-inner">
                            <ul repeat.for = "slide of nearByJobSlides" class="phs-item phs-grid-row" >
                                <li repeat.for = "item of slide" class="phs-small-6">
                                    <a href="javascript:void(0)">
                                        <div class="phs-job-title">${item.title}</div>
                                        <div class="phs-job-info">
                                            <span class="phs-job-loacation">${item.location}</span>
                                            <span class="phs-job-category">${item.category}</span>
                                        </div>
                                    </a>
                                </li>
                            </ul>                               
                        </div>
                    </div>
                    <div class="phs-widget-footer">
                        <a class="left" href="#phsNearbyJobs" role="button" data-slide="prev">
                            <i class="fa fa-angle-left"></i> Move to Previous
                        </a>
                        <ol class="phs-carousel-indicators">
                            <li repeat.for = "slide of nearByJobSlides" data-target="#phsNearbyJobs" data-slide-to="${$index}" class="" click.trigger="changeActiveClass()"></li>
                        </ol>
                        <a class="right" href="#phsNearbyJobs" role="button" data-slide="next">
                            Move to Next <i class="fa fa-angle-right"></i>
                        </a>
                    </div>

---

以及如何在aurelia上传递事件对象

只需使用插值

<div class="${ applyMyClass ? 'my-class' : '' }">

例如

---

您不需要通过单击事件来执行此操作，它与ng2相同（只需更少的代码！）

在这种情况下，发生数据幻灯片时我该如何处理？什么是数据幻灯片？你是说当数据改变时？它将自动更新，因为它使用属性观察-只要您的属性不是函数（它可以是getter），是否有一种方法可以执行单个类（没有三元运算符）？例如

<div class="${ carouselIndex == $index ? 'active' : '' }">