单选题
一个HTML 文件的启始标记为（ ）。
A、
B、
</label> </li> <li style="clear:both;"></li> <li > <label> <input type="radio" class="ace" name="answer_1f34c411-9eeb-4cf9-85bb-ed98cde257f6" value="3"> <span class="lbl">C、 </span> <html> </label> </li> <li style="clear:both;"></li> <li > <label> <input type="radio" class="ace" name="answer_1f34c411-9eeb-4cf9-85bb-ed98cde257f6" value="4"> <span class="lbl">D、 </span> <meta> </label> </li> <li style="clear:both;"></li> </ul> </div> <div class="analysis" id="analysis1f34c411-9eeb-4cf9-85bb-ed98cde257f6"> <div><strong>【正确答案】</strong> C </div> <div id="judgeDiv1f34c411-9eeb-4cf9-85bb-ed98cde257f6" style="display:none;"></div> <div><strong>【答案解析】</strong></div> </div> <div class="question-op"> <button class="layui-btn" onclick=" ErrSubject(); showAnswer();">提交答案</button> <button class="layui-btn" onclick="window.parent.close();"> 关闭 </button> </div> </div> </div> </body> </html> <script type="text/javascript"> function showAnswer() { $(".analysis").each(function () { $(this).css("display", "block"); }); $($(".question-op").children()[0]).hide(); window.parent.setIframeHeight(); } function ErrSubject() { var subjectAnswer = new Array(); subjectAnswer[0] = new Array('1f34c411-9eeb-4cf9-85bb-ed98cde257f6', '3,'); if(subjectAnswer.length == 0) iserr = true; if(subjectAnswer.length > 0) { var iserr = false; for(var i = 0; i < subjectAnswer.length && !iserr; i++) { var val = ""; $("input[name='answer_" + subjectAnswer[i][0] + "']").each(function() { if($(this).attr("type") == "text") { val += $(this).val() + ","; } else { if($(this).is(':checked')) val += $(this).val() + ","; } }); if(val != subjectAnswer[i][1]) { $("#judgeDiv" + subjectAnswer[i][0]).css({"color":"#dd0000","paddingLeft":"10px", "display":"block"}).html("回答：X"); $("#analysis" + subjectAnswer[i][0]).css("backgroundColor","#FFF7F5"); iserr = true; } else { $("#judgeDiv" + subjectAnswer[i][0]).css({"color":"#009688","paddingLeft":"10px", "display":"block"}).html("回答：√"); $("#analysis" + subjectAnswer[i][0]).css("backgroundColor","#F5FFF6"); } } if(iserr) { } } } $(function () { layui.use(['form', 'element'], function () { var $ = layui.jquery , element = layui.element; }); window.parent.setIframeHeight(); }); function collection(_subid, _cid, _mode) { $.ajax({ url: "/ashx/collection.ashx?operate=collection", data:{"subid":_subid, "cid":"-1", "mode":_mode}, type: "POST", success: function (data) { if (data == "ok") { $("#collectionSub").text("取消收藏"); layer.tips('已收藏此试题。', '#collectionSub'); } else if(data == "cancel") { $("#collectionSub").text("收藏试题"); layer.tips('已取消收藏。', '#collectionSub'); } else if (data == "nouser") { layer.tips('请先登录。', '#collectionSub'); } } }); } </script>