var imgs = $("-sharppictureQueryTable img").prevObject[0].images;
 the following figure is the printed result of the above sentence: 
 
console.loglength0dom
console.log($("-sharppictureQueryTable img"))


:

:
 
 
{
            title : "",
            name : "PICTURE_NAME1",
            width : 320,
            lockWidth : false,
            align : "center",
            renderer : function(val, item, rowIndex) {
                if (item.COLLECTION_NAME1 != undefined) {
                    picture_path = "image/no_picture.png";
                    var picture_name = item.COLLECTION_NAME1 + "("
                        + item.COLLECTION_CODE1 + ")";
                    if (item.PICTURE_PATH1) {
                        picture_path = getLocaleHostPath()
                            + item.PICTURE_PATH1;
                    }
                    val = val != null ? val : "";
                    return "<div style="width:310px;height:100%;text-align:center;background-color:white;padding-top:5px;"><div>"
                        + "<a href="javascript:void(0)" onclick="openPage(\"html/showcenter/collection/collectionstatistical/picturequery/PictureDetailInfo.html?id="
                        + item.COLLECTION_ID1
                        + "&collection_code="
                        + item.COLLECTION_CODE1
                        + "\",\"1300,600\")">"
                        + "<img alt="" style="width:200px;height:200px;" title=""+val+"" src=""+picture_path
                        +""/></a></div><span style="margin-top:5px;">"
                        + picture_name + "</span></div>";
                } else {
                    return "";
                }
            }
        }