Question

我在php文件take_test中有两个提交按钮： -

<?php 

// First we execute our common code to connection to the database and start the session 
require("common.php"); 

// At the top of the page we check to see whether the user is logged in or not 
if(empty($_SESSION['user'])) 
{ 
    // If they are not, we redirect them to the login page. 
    header("Location: index.php"); 

    // Remember that this die statement is absolutely critical.  Without it, 
    // people can view your members-only content without logging in. 
    die("Redirecting to index.php"); 
} 

// Everything below this point in the file is secured by the login system 

// We can display the user's username to them by reading it from the session array.  Remember that because 
// a username is user submitted content we must use htmlentities on it before displaying it to the user. 
?> 


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-AU">

 <head>
 <title>OSTA - Take Test</title>

<meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />

<link href="css.css" rel="stylesheet" type="text/css" />  

<script language="javascript" type="text/javascript"     src="editarea/edit_area/edit_area_full.js"></script>

 </head>

 <body>

<div class="wrapper">
<div class="header">
 <h1> OSTA - Take Test</h1>
</div><!-- end header -->

<div class="nav">
<ul>
<li>Hello <?php echo htmlentities($_SESSION['user']['username'], ENT_QUOTES, 'UTF- 8'); ?></li>
<li><a href="s_assignments.php">Assignments</a></li>
<li><a href="s_edit_account.php">Edit Account</a></li>
<li><a href="s_logout.php">Logout</a></li>
</ul>
</div><!-- end nav -->

<div class="content">   
<?php   
echo "<form id='code' action='take_test.php' method='post'>";
$con=mysqli_connect($host,$username,$password,$dbname);
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}


if(isset($_POST['next']))
{

$aa = $_POST['source'];
//foreach($aa as $k) :
$query = "INSERT INTO student_test(status,user_name,aaid,qqid,answer,submit_time)
VALUES('1','{$_SESSION['user'] ['username']}','{$_POST['edit']}','{$_POST['qid']}','{$aa}',NOW())";
$rest5=mysqli_query($con,$query);
//endforeach;

//}

//if (!$rest)
//{
//  die('Error: ' . mysqli_error($con));
//}
$qry="SELECT qid FROM questions where aid={$_POST['edit']}
ORDER BY qid DESC
LIMIT 1";
$restfinal=mysqli_query($con,$qry);
$rowfinal = mysqli_fetch_array($restfinal);
$qidfinal = $rowfinal['qid'];
if ($qidfinal==$_POST['qid'])
{   
echo "Test Submitted Successfully.";
sleep( 3 );
header("Location: s_assignments.php");
echo "Test Submitted Successfully.";
}
}


if(isset($_POST['edit']))
{
    $id2 = $_POST['edit'];


    if(isset($_POST['next']))
    {
    $a=$_POST['a'];
    if(!isset($a)){
        $a=0;
    }}


    if(!isset($a)){
        $a=0;
    }
//$res=mysqli_query($con,"Select * from assignments where a_id='$id'");
$res1 = mysqli_query($con,"Select n_question from assignments where a_id='$id2'");  
$row1 = mysqli_fetch_array($res1);
$n_q = $row1['n_question'];
$res8=mysqli_query($con,"Select * from questions where aid='$id2' LIMIT 1 OFFSET  $a");

}

echo "<table border='0' cellspacing='1' cellpadding='1'>";
echo "<tr>

<th>Question</th>
</tr>";

while($rowt = mysqli_fetch_array($res8))
{
    echo "<tr>";
        echo "<td>" . $rowt['question'] . "</td>";
    echo "</tr>";
    echo "<td>"."<input type ='hidden' id='qid' name ='qid'    value=".$rowt['qid']."></td>";
    echo "<td>"."<input type ='hidden' id='aid' name ='edit' value=".$rowt['aid']."></td>";         
    //echo "<td>"."<input type ='hidden' id='id' name ='id' value=".$id.">    </td>";
    echo "<tr>";
    echo "<tr>";
    echo "<td>"."<hr>"."<td>";
    echo "</tr>";

    echo "<td>"."<label for='lang'>Select Language:</label>
    <select name='lang' id='lang'>
    <option value='7'>Ada (gnat-4.3.2)</option>
    <option value='13'>Assembler (nasm-2.07)</option>
    <option value='45'>Assembler (gcc-4.3.4)</option>
    <option value='104'>AWK (gawk) (gawk-3.1.6)</option>
    <option value='105'>AWK (mawk) (mawk-1.3.3)</option>
    <option value='28'>Bash (bash 4.0.35)</option>
    <option value='110'>bc (bc-1.06.95)</option>
    <option value='12'>Brainf**k (bff-1.0.3.1)</option>
    <option value='11'>C (gcc-4.3.4)</option>
    <option value='27'>C# (mono-2.8)</option>
    <option value='1' selected='selected'>C++ (gcc-4.3.4)</option>
    <option value='44'>C++0x (gcc-4.5.1)</option>
    <option value='34'>C99 strict (gcc-4.3.4)</option>
    <option value='14'>CLIPS (clips 6.24)</option>
    <option value='111'>Clojure (clojure 1.1.0)</option>
    <option value='118'>COBOL (open-cobol-1.0)</option>
    <option value='106'>COBOL 85 (tinycobol-0.65.9)</option>
    <option value='32'>Common Lisp (clisp) (clisp 2.47)</option>
    <option value='102'>D (dmd) (dmd-2.042)</option>
    <option value='36'>Erlang (erl-5.7.3)</option>
    <option value='124'>F# (fsharp-2.0.0)</option>
    <option value='123'>Factor (factor-0.93)</option>
    <option value='125'>Falcon (falcon-0.9.6.6)</option>
    <option value='107'>Forth (gforth-0.7.0)</option>
    <option value='5'>Fortran (gfortran-4.3.4)</option>
    <option value='114'>Go (gc-2010-07-14)</option>
    <option value='121'>Groovy (groovy-1.7)</option>
    <option value='21'>Haskell (ghc-6.8.2)</option>
    <option value='16'>Icon (iconc 9.4.3)</option>
    <option value='9'>Intercal (c-intercal 28.0-r1)</option>
    <option value='10'>Java (sun-jdk-1.6.0.17)</option>
    <option value='35'>JavaScript (rhino) (rhino-1.6.5)</option>
    <option value='112'>JavaScript (spidermonkey) (spidermonkey-1.7)</option>
    <option value='26'>Lua (luac 5.1.4)</option>
    <option value='30'>Nemerle (ncc 0.9.3)</option>
    <option value='25'>Nice (nicec 0.9.6)</option>
    <option value='122'>Nimrod (nimrod-0.8.8)</option>
    <option value='43'>Objective-C (gcc-4.5.1)</option>
    <option value='8'>Ocaml (ocamlopt 3.10.2)</option>
    <option value='119'>Oz (mozart-1.4.0)</option>
    <option value='22'>Pascal (fpc) (fpc 2.2.0)</option>
    <option value='2'>Pascal (gpc) (gpc 20070904)</option>
    <option value='3'>Perl (perl 5.12.1)</option>
    <option value='54'>Perl 6 (rakudo-2010.08)</option>
    <option value='29'>PHP (php 5.2.11)</option>
    <option value='19'>Pike (pike 7.6.86)</option>
    <option value='108'>Prolog (gnu) (gprolog-1.3.1)</option>
    <option value='15'>Prolog (swi) (swipl 5.6.64)</option>
    <option value='4'>Python (python 2.6.4)</option>
    <option value='116'>Python 3 (python-3.1.2)</option>
    <option value='117'>R (R-2.11.1)</option>
    <option value='17'>Ruby (ruby-1.9.2)</option>
    <option value='39'>Scala (scala-2.8.0.final)</option>
    <option value='33'>Scheme (guile) (guile 1.8.5)</option>
    <option value='23'>Smalltalk (gst 3.1)</option>
    <option value='40'>SQL (sqlite3-3.7.3)</option>
    <option value='38'>Tcl (tclsh 8.5.7)</option>
    <option value='62'>Text (text 6.10)</option>
    <option value='115'>Unlambda (unlambda-2.0.0)</option>
    <option value='101'>Visual Basic .NET (mono-2.4.2.3)</option>
    <option value='6'>Whitespace (wspace 0.3)</option>
    </select>". "</td>";
    echo "</tr>";

    echo "<tr>";  
        echo "<td>"."<label for='source'>Source Code:</label>"."</td>";
    echo "</tr>";

    echo "<tr>";  
        echo "<td>"."<textarea cols='80' rows='12' name='source' id ='source'>    </textarea>"."</td>";
    echo "</tr>";
}   
echo "<tr>";//echo "<br />";
echo "<td>"."<label for='input'>Input: <span class='description'>(Data that will be   given to the program on the stdin.)</span></label>";
//echo "<br />";
echo "</tr>";
echo "<tr>";
echo "<td>"."<textarea cols='40' rows='3' name='input' id='input'></textarea>". "  </td>";
echo "</tr>";
$a=$a+1;
echo "<input type='hidden' value='$a' name='a'>";
   //   echo "<td>"."<a href='take_test.php'> "
   //echo "<td>"."<input type ='submit' name ='compile' value='Compile Code'>"."</td>";
  echo "<td>"."<input type='submit' name='compile' id='compile' value='Compile   Code'>"."</td>";
  echo "<td>"."<input type ='submit' name ='next' value='Next Question'>"."</td>";
  echo "</table>"; 

  echo"</form>";

  ?>
  <div id="response">
        <div class="meta"></div>
        <div class="output"></div>
</div>
</div><!-- end content -->

<div class="footer">
<p>designed by  |  &copy;  </p>
</div><!-- end footer -->
</div><!-- end wrapper -->
<script language="javascript" type="text/javascript">
editAreaLoader.init({
id : "source"       // textarea id
,syntax: "css"          // syntax to be uses for highgliting
,start_highlight: true      // to display with highlight mode on start-up
});
</script>

<script type="text/javascript" src="jquery.min.js"></script>
<script src="script.js"></script>
<!-- <script src="../jquery/jquery-1.4.1.min.js"></script> -->
</body>
</html>

一个提交名称=下一个我正在检测通过如果（isset（$ _ POST [ '未来']））而另一个通过这是script.js的代码

jQuery(document).ready(function($) {
//$('input[name=compile]').on('click',function(){
//  $(this).closest("#code")[0].submit();})
//$('#compile').on('click', function() {
    $('#code').submit( function(){

    var data = $(this).serialize();
    var source = $('textarea#source').val();

    if( source == '' ) {
        alert( 'No source code provided');
        return false;
    }

    $(this).append('<div class="loading">Processing...</div>');

    $.ajax({
        type: 'post',
        url: 'process.php',
        dataType: 'json',
        data: data + '&process=1',
        cache: false,
        success: function(response){
            $('.loading').remove();
            $('.cmpinfo').remove();
            $('#response').show();
            //alert(response);
            console.log(response.raw);
            if( response.status == 'success' ) {
                $('.meta').text( response.meta );
                $('.output').html('<strong>Output</strong>: <br><br><pre>' + response.output + '</pre>');

                if( response.cmpinfo ) {
                    $('.cmpinfo').remove();
                    $('.meta').after('<div class="cmpinfo"></div>');
                    $('.cmpinfo').html('<strong>Compiler Info: </strong> <br><br>' + response.cmpinfo );
                }

            } else {
                //$('.output').html('<pre>' + response + '</pre>');
                alert( response.output );
            }
            //alert( response.msg );
        }
    });

    return false;
    });
});

问题是每当我点击编译按钮或下一个按钮时它只考虑编译按钮。如果我删除脚本文件，下一个按钮运行完美。请提出任何建议。我尝试了很多解决方案但没有任何工作。

Answer 1

JS文件中的$('#code').submit函数似乎是个问题。由于PHP中的两个按钮都是提交按钮，因此单击这两个按钮中的任何一个将触发表单提交操作，然后它将触发process.php的AJAX请求。

如果脚本文件已注释掉，则会调用表单标记中提到的默认操作页面，这就是当脚本被注释掉时下一个按钮工作的原因。

您应该在JS文件中添加一个控件，以检查用户实际点击了哪些提交按钮，然后执行相应的操作。以下是一个非常基本的样本供您参考：

<强> HTML

<form id="code" action="aa.php" method="post">
    <input type="submit" class="button" name="compile" value="compile"/>
    <input type="submit" class="button" name="next" value="next"/>
</form>

JS（在DOM准备就绪时执行）

var buttonpressed;
$('.button').click(function() {
    buttonpressed = $(this).attr('name');
}); //This will set the name of the button that was clicked to the buttonpressed variable whenever a button is clicked

$('#code').submit(function() {
//The below lines check for the button's name upon form submit and then process accordingly
    if(buttonpressed=="next") alert("Add code to next");
    else alert("Add code to compile");
    buttonpressed='';
    return false;
});

两个提交按钮 - 默认提交因其他原因无效

1 个答案: