如何突出每个问题的状态，无论是否回答

Question

我正在做一个测验页面。这里有与每个问题相对应的单选按钮。我必须查看每个问题的状态，无论是否回答。请给我任何解决方案来做到这一点。

这是我的代码

  <?php 
 error_reporting(E_ALL ^ E_DEPRECATED);
$rs=mysql_query("select * from question where testid=$tid order by quesid ",$cn) or die(mysql_error());

if($_SESSION[qn]>mysql_num_rows($rs)-1)
{
unset($_SESSION[qn]);
echo "<h1 class=\"head1\">Some Error  Occured</h1>";
session_destroy();
echo "Please <a href=\"UserHome.php\"> Start Again</a>";

exit;
}
        ?>
        <form name="myfm" id="myfm" method="post" action="QuizSub.php">
        <table width="100%">  
        <?php
        $n=0;
        while($row= mysql_fetch_row($rs)){?>

        <tr> <td width="30"></td><td></td></tr> 
        <?php $n=$n+1; ?>
        <tr><td>Question <?php echo $n.") ".$row[2]; ?></td></tr>
    <tr><td class="style8">A. <input type="radio" name="ques<?php echo $n; ?>[]" value="1"><?php echo $row[3]; ?></td></tr>
    <tr><td class="style8">B. <input type="radio" name="ques<?php echo $n; ?>[]" value="2"><?php echo $row[4];?></td></tr>
    <tr><td class="style8">C. <input type="radio" name="ques<?php echo $n; ?>[]"  value="3"><?php echo $row[5];?></td></tr>
    <tr><td class="style8">D. <input type="radio" name="ques<?php echo $n; ?>[]"  value="4"><?php echo $row[6];?></td></tr>

    <?php 
        }
        echo "<tr><td><input type=\"hidden\" name=\"qncount\" id=\"qncount\" value=\"".$n."\"><input type=\"submit\" name=\"submit\" id=\"result\" value=\"Get Result\"></td></tr>";
        ?>
        </table>
        </form>

Answer 1

如果您试图阻止人们提交未经检查的问题答案 - 在您的情况下 - 最简单的方法是对每个答案：默认选中一个。

<input type="radio" checked />

对于无人参与的单选按钮，定位您正在使用的名称，即：

<form method="post">
<input type="radio" value="1" name="example">
</form>

然后将其 POST 到一个 PHP 文件。 然后，您可以通过执行以下操作来检查它是否无人看管：

<?php
if(!isset($_POST['example'])): // ! represents NOT
    // do something
endif;

Answer 2

<?php 
 error_reporting(E_ALL ^ E_DEPRECATED);
$rs=mysql_query("select * from question where testid=$tid order by quesid ",$cn) or die(mysql_error());

if($_SESSION[qn]>mysql_num_rows($rs)-1)
{
unset($_SESSION[qn]);
echo "<h1 class=\"head1\">Some Error  Occured</h1>";
session_destroy();
echo "Please <a href=\"UserHome.php\"> Start Again</a>";

exit;
}
        ?>
        <form name="myfm" id="myfm" method="post" action="QuizSub.php">
        <table width="100%">  
        <?php
        $n=0;
        while($row= mysql_fetch_row($rs)){?>

        <tr> <td width="30"></td><td></td></tr> 
        <?php $n=$n+1; ?>
        <tr><td>Question <?php echo $n.") ".$row[2]; ?></td></tr>
    <tr><td class="style8">A. <input type="radio" name="ques<?php echo $n; ?>[]" value="1"><?php echo $row[3]; ?></td></tr>
    <tr><td class="style8">B. <input type="radio" name="ques<?php echo $n; ?>[]" value="2"><?php echo $row[4];?></td></tr>
    <tr><td class="style8">C. <input type="radio" name="ques<?php echo $n; ?>[]"  value="3"><?php echo $row[5];?></td></tr>
    <tr><td class="style8">D. <input type="radio" name="ques<?php echo $n; ?>[]"  value="4"><?php echo $row[6];?></td></tr>

    <?php 
        }
        echo "<tr><td><input type=\"hidden\" name=\"qncount\" id=\"qncount\" value=\"".$n."\"><input type=\"submit\" name=\"submit\" id=\"result\" value=\"Get Result\"></td></tr>";
        ?>
        </table>
        </form>

将 QuizSub.php 保存如下

<?php  
if($_SERVER['REQUEST_METHOD'] == 'POST' && $_POST['submit'] == "Get Result")
{

    if(ctype_digit($_POST['qncount']) && $_POST['qncount'] > 0)
    {
        for($i=1;$i<=$_POST['qncount'];$i++)
        {
            if(isset($_POST['ques'.$i]))
                echo "Q".$i." is answered and the answer is".$_POST['ques'.$i][0] ;
            else
                echo "Q".$i." is not answered" ;

            echo "<br/>";
        }   
    }
    else
    {
        echo "Questions are empty";
        exit;
    }

}
?>

Answer 3

尝试这个 ：

function checkAnsweredOrNot() {
    var radioButtons = document.myfm.radioGroupName;
    var answered;

    for(var i=0; i<radioButtons.length; i++) {
        if( radioButtons[i].checked ) {
            answered = true;
            break;
        }
    }
    answered = false;
};