小编Rav*_*ari的帖子

在编码测试中,我最近遇到一个问题,要求我找出将在控制台中打印的内容.问题如下.我不明白下面的代码将如何被理解和执行.

需要帮忙

var arr = ["a" , "b" , "c" , "d"][1,2,3];
console.log(arr);

这个定义甚至意味着什么？

我正在寻找一种动态添加类到aurelia模板的方法.如果特定的li可见,我必须添加一个活动类.

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>

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 …