我在下面有一个代码，它在一列中显示文本输入，在第二列中显示总分列，在最后一列中显示剩余标记。该表如下所示：
Marks Per Answer Total Marks Marks Remaining
(blank text input) 4 4
(blank text input) 6 6
(blank disabled text input) 4 4
但我遇到的问题是，如果 READONLY 文本输入为空，它应该显示“Total Marks”列的值（上面示例中的只读文本输入为 4）。
此外，只读文本输入包含总分数，在“剩余分数”列下，这是不正确的，对于这一行，它应该显示 0。（至于只读文本输入包含值 4，所以如果我们减去4 在总标记下，它应该为禁用的文本输入行的剩余标记设为 0。）
所以当用户访问页面时，表格应该如下所示：
Marks Per Answer Total Marks Marks Remaining
(blank text input) 4 4
(blank text input) 6 6
(readonly text input = 4 (same value as under Total Marks)) 4 0
我的问题是，如何通过更改下面的 jquery 来解决上述两个步骤：
$(function () {
//alert("here");
var questions = $('#markstbl td[class*="_ans"]').length;
//disable single entry
for (var i=0;i<=questions;i++){
if ($("[class*=q" + i + "_mark]").length == 1) {
//alert(t_marks);
var t_marks = $("[class*=q" + i + "_ans]");
var t_marksHtml = t_marks.html();
t_marks.html("0");
$("[class*=q" + i + "_mark]").val(t_marksHtml).attr('readonly', true);
//$("[class*=q"+i+"_mark]").attr('readonly',true);
}
}
//find each question set and add listeners
for (var i = 0; i <= questions; i++) {
$('input[class*="q' + i + '"]').keyup(function () {
var cl = $(this).attr('class').split(" ")[1]
var questionno = cl.substring(cl.indexOf('q') + 1, cl.indexOf('_'));
var tot_marks = $(".q" + questionno + "_ans_org").val();
//alert(tot_marks);
var ans_t = 0;
$("[class*=q" + questionno + "_mark]").each(function () {
var num = (isNaN(parseInt($(this).val()))) ? 0 : parseInt($(this).val());
ans_t += parseInt(num);
});
ans_t = tot_marks - ans_t;
//alert(ans_t);
//var fixedno = tot_marks;
var ans = ans_t;
var answerText = '<strong>' + ans + '</strong>';
$(".q" + questionno + "_ans").val(ans);
$(".q" + questionno + "_ans_text").html(answerText);
});
}
});
下面是动态 HTML 表格：
<form id="Marks" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<table border='1' id='markstbl'>
<thead>
<tr>
<th class='questionth'>Question No.</th>
<th class='questionth'>Question</th>
<th class='answerth'>Answer</th>
<th class='answermarksth'>Marks per Answer</th>
<th class='totalmarksth'>Total Marks</th>
<th class='noofmarksth'>Marks Remaining</th>
</tr>
</thead>
<tbody>
<?php
$row_span = array_count_values($searchQuestionId);
$prev_ques = '';
foreach($searchQuestionId as $key=>$questionId){
?>
<tr class="questiontd">
<?php
if($questionId != $prev_ques){
?>
<td class="questionnumtd" name="numQuestion" rowspan="<?php echo$row_span[$questionId]?>"><?php echo$questionId?> <input type="hidden" name="q<?php echo$questionId?>_ans_org" class="q<?php echo$questionId?>_ans_org" value="<?php echo$searchMarks[$key]?>"><input type="hidden" name="q<?php echo$questionId?>_ans" class="q<?php echo$questionId?>_ans" value="<?php echo$searchMarks[$key]?>"></td>
<td class="questioncontenttd" rowspan="<?php echo$row_span[$questionId]?>"><?php echo$searchQuestionContent[$key]?> </td>
<?php
}
?>
<td class="answertd" name="answers[]"><?php echo$searchAnswer[$key]?></td>
<td class="answermarkstd">
<input class="individualMarks q<?php echo$questionId?>_mark_0" q_group="1" name="answerMarks[]" id="individualtext" type="text" />
</td>
<?php
if($questionId != $prev_ques){
?>
<td class="totalmarkstd" rowspan="<?php echo$row_span[$questionId]?>"><?php echo$totalMarks[$key]?></td>
<td class="noofmarkstd q<?php echo$questionId?>_ans_text" q_group="1" rowspan="<?php echo$row_span[$questionId]?>"><?php echo"<strong>".$searchMarks[$key]."</strong>"?></td>
<?php
}
?>
</tr>
<?php
$prev_ques = $questionId;
}
?>
</tbody>
</table>
</form>
目前在 jquery 函数中，我正在尝试使用 t_marks 变量来显示文本输入中的值，但是当我警告 t_marks 时没有显示任何内容
更新：
完整的 HTML：
<table border='1' id='markstbl'>
<thead>
<tr>
<th class='questionth'>Question No.</th>
<th class='questionth'>Question</th>
<th class='answerth'>Answer</th>
<th class='answermarksth'>Marks per Answer</th>
<th class='totalmarksth'>Total Marks</th>
<th class='noofmarksth'>Marks Remaining</th>
</tr>
</thead>
<tbody>
<tr class="questiontd">
<td class="questionnumtd" name="numQuestion" rowspan="2">1 <input type="hidden" name="q1_ans_org" class="q1_ans_org" value="5"><input type="hidden" name="q1_ans" class="q1_ans" value="5"></td>
<td class="questioncontenttd" rowspan="2">Here are 2 answers </td>
<td class="answertd" name="answers[]">B</td>
<td class="answermarkstd">
<input class="individualMarks q1_mark_0" q_group="1" name="answerMarks[]" id="individualtext" type="text" />
</td>
<td class="totalmarkstd" rowspan="2">5</td>
<td class="noofmarkstd q1_ans_text" q_group="1" rowspan="2"><strong>5</strong></td>
</tr>
<tr class="questiontd">
<td class="answertd" name="answers[]">D</td>
<td class="answermarkstd">
<input class="individualMarks q1_mark_0" q_group="1" name="answerMarks[]" id="individualtext" type="text" />
</td>
</tr>
<tr class="questiontd">
<td class="questionnumtd" name="numQuestion" rowspan="1">2 <input type="hidden" name="q2_ans_org" class="q2_ans_org" value="5"><input type="hidden" name="q2_ans" class="q2_ans" value="5"></td>
<td class="questioncontenttd" rowspan="1">Here is a single answer </td>
<td class="answertd" name="answers[]">True</td>
<td class="answermarkstd">
<input class="individualMarks q2_mark_0" q_group="1" name="answerMarks[]" id="individualtext" type="text" />
</td>
<td class="totalmarkstd" rowspan="1">5</td>
<td class="noofmarkstd q2_ans_text" q_group="1" rowspan="1"><strong>5</strong></td>
</tr>
</tbody>
</table>