这是我验证 html 表的 jQuery 代码:
function validation() {
var alertValidation = "";
var _qid = "";
var _msg = "";
$("[class*='q']").each(function (i) {
var questions = parseInt($("[class*=q" + i + "_qnum]").text());
var marks = parseInt($("[class*=q" + i + "_ans_text]").text());
var txtinput = $("[class*=q" + i + "_mark]").val();
_qid = questions;
_msg = "You have errors on Question Number: " + _qid + "\n";
if (txtinput == '' || txtinput == null) {
alertValidation += "\n\u2022 You have not entered in a value for all the Indivdiaul Marks textbox\n";
} else if (marks < '0') {
alertValidation = "Your Total Marks Remaining does not equal 0 \n\n\u2022 You Need To Remove " + Math.abs(marks) + " Marks";
} else if (marks > '0') {
alertValidation = "Your Total Marks Remaining does not equal 0 \n\n\u2022 You Have " + marks + " Marks Remaining";
}
if (alertValidation != "") {
return false; //Stop the each loop
}
});
if (alertValidation != "") {
alert(_msg + alertValidation);
return false;
}
return true;
}
现在我觉得奇怪的是,如果剩余标记数高于 0 时的验证以及剩余标记数低于 0 时的验证在输出警报时完美运行,如下所示:
大于 0:
You have errors on Question Number: 1
Your Total Marks Remaining does not equal 0
• You Have 7 Marks Remaining
小于 0:
You have errors on Question Number: 1
Your Total Marks Remaining does not equal 0
• You Need To Remove 3 Marks
但是,当我尝试验证“每个答案的分数”部分下的文本输入是否为空时,它会在下面显示此消息:
You have errors on Question Number: NaN
• You have not entered in a value for all the Indivdiaul Marks textbox
为什么它不能显示此验证的问题编号?
我遇到的另一个小问题是,即使我在“每个答案的标记”下的所有文本输入中输入了一个值,它仍然会在不应该这样做时显示上述验证消息警报。为什么它也这样做?
下面是一个示例 html 表:
<table border='1' id='markstbl'>
<thead>
<tr>
<th class='questionth'>Question No.</th>
<th class='answermarksth'>Marks per Answer</th>
<th class='noofmarksth'>Marks Remaining</th>
</tr>
</thead>
<tbody>
<tr class="questiontd">
<td class="questionnumtd q<?php echo$questionId?>_qnum" name="numQuestion" rowspan="1">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="answermarkstd">
<input class="individualMarks q1_mark" q_group="1" name="answerMarks[]" class="individualtext" type="text" onkeypress="return isNumberKey(event)" maxlength="3" />
</td>
<td class="noofmarkstd q1_ans_text" q_group="1" rowspan="1"><strong>5</strong></td>
</tr>
</tbody>
</table>