jQuery 获取有多个class名的元素

　　　　　　　　　　<div class="write-upload">                                           
                            <p class="write-files old-files">
                                <i class="ico ico-wjj"></i>policycustom1.xml<span onclick="deleteAttachment(this)">x</span>
                            </p>                        
                            <p class="write-files old-files">
                                <i class="ico ico-wjj"></i>bee2.jpg<span onclick="deleteAttachment(this)">x</span>
                            </p>                        
                            <p class="write-files old-files">
                                <i class="ico ico-wjj"></i>policycustom1.xml<span onclick="deleteAttachment(this)">x</span>
                            </p>                        
                            <p class="write-files old-files">
                                <i class="ico ico-wjj"></i>bee2_small.jpg<span onclick="deleteAttachment(this)">x</span>
                            </p>                        
                            <p class="write-files old-files">
                                <i class="ico ico-wjj"></i>bee2.jpg<span onclick="deleteAttachment(this)">x</span>
                            </p>                        
                        <input type="hidden" id="delNames" name="delNames" value="">
                    </div>

$(".write-files.old-files").remove();