如果div中存在元素,则Jquery添加类

Question

我想jQuery来添加一个类.pointer来.staff-container,如果<a href="">中存在.staff-picture.

我的Jquery:

if($('.staff-container').find('.staff-picture').closest('a').length) {
    $(this).addClass('pointer');
}

上面的jquery没有添加任何类,我做错了什么？

---

---

我的Css:

.pointer {
    cursor:pointer !important;
}

我的HTML:

<div class="teachers">
    <div class="span12">
        <div class="scroll transparent">
            <div class="staff-outer-container">
                <div class="staff-container">
                    <div class="staff">
                        <div class="staff-picture">
                            <a href="http://ahmedmathematics.weebly.com/index.html" target="_blank"><img src="img/people/teachers/ahmed.png" /></a>
                        </div>
                        <p><span class="bold">Mr. Ahmed</span><br />
                        Ext. 13417<br />
                        Room 417/323<br />
                        <a href="mailto:Ahmed@wcskids.net">Ahmed@wcskids.net</a></p>
                    </div>
                </div>
                <div class="staff-container">
                    <div class="staff">
                        <div class="staff-picture">
                            <img src="img/people/teachers/aiello.png" />
                        </div>
                        <p><span class="bold">Mr. Aiello</span><br />
                        Ext. 13328<br />
                        Room 328/323<br />
                        <a href="mailto:ASusan@wcskids.net">ASusan@wcskids.net</a></p>
                    </div>
                </div>
                <div class="staff-container">
                    <div class="staff">
                        <div class="staff-picture">
                            <a href="http://www.mraiosa.com/class/Home.html" target="_blank"><img src="img/people/teachers/aiosa.png" /></a>
                        </div>
                        <p><span class="bold">Mr. Aiosa</span><br />
                        Ext. 13419<br />
                        Room 419/323<br />
                        <a href="mailto:BAiosa@wcskids.net">BAiosa@wcskids.net</a></p>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

Answer 1

你可以这样做 :

$('.staff-picture a').closest('.staff-container').addClass('pointer');

我希望代码中的逻辑是显而易见的.