當滑鼠移入移出div時，觸發事件（此處為圖片的可見和不可見）
阿新 • • 發佈：2019-02-14
<div onmouseover='showDel(this)' onmouseout='hideDel(this)'
class='selector"
+ quesNum
+ " selector-style'><input type='radio' name='S"
+ quesNum
+ "'><input type='text' placeholder='選項' class='ST"
+ quesNum
+ "'><image id='"
+ quesNum
+ "' style='width:10px;height:10px;margin-left:10px;cursor:pointer;visibility:hidden' src='img/addsel.png' alt='新增' onclick='addSelector(this)' ><image class='image"
+ quesNum
+ "' name='image"
+ quesNum
+ "' style='width:10px;height:10px;margin-left:10px;cursor:pointer;visibility:hidden' src='img/delsel.gif' alt='刪除' onclick='delSelector(this)' ></div>
function showDel(obj) {
$(obj).find("img").css('visibility', 'visible');}
function hideDel(obj) {
$(obj).find("img").css('visibility', 'hidden');
}