从DataTable中获取值:

foreach (DataRow dr in ((DataTable)ViewBag.bookInfoList).Rows)
{

<tr>
<th class="showImg" value="@dr["example"]"></th>
<th class="showImg">"@dr["answer"]"</th>
<th class="showImg" value="@dr["analysis"]"></th>
<th>@dr["keypoint"]</th>
<th>@dr["keypointTitle"]</th>
<th class="showImg" value="@dr["keypointContent"]"></th>
<th class="showImg" value="@dr["examples"]"></th>

 循环显示:

$(function () {
$('.showImg').each(function (item, index) {
console.log($(this));
console.log(index);
$('.showImg').eq(item).html($('.showImg').eq(item).attr('value'));
})
});