Php 如果我单击重置按钮（重置不同表单上的单选按钮），如何清除表格数据

我想要的是，如果我单击我的重置按钮，它将重置我的单选按钮并清除其在表数据上的值。。。。我应该在我的代码中添加什么

function  clear(){
    var elems = document.getElementsByName('president') && document.getElementById('president');
    for(i=0;i<elems.length;i++)
        elems[i].checked=false;
    document.list.editform.president.value='';

}

这是我的总统

   <?php
   // get the records from the database
      if ($result = $mysqli->query("SELECT * FROM candidate_info WHERE position= 'president'"))
       {
        // display records if there are records to display
          if ($result->num_rows > 0)
         {
           // display records in a table
           echo "<table border='1' cellpadding='10'>"; 
            // set table headers
         echo "<tr><th>Student ID</td><th>Course</th><th>Name</th></tr>";
             while ($row = $result->fetch_object())
               {
             // set up a row for each record
              echo "<tr>";
            echo "<td>" . $row->studid . "</td>";
   echo "<td>" . $row->course . "</td>";
        echo "<td>" . $row->fname . " ". $row->mname ." ". $row->lname ." </td>";
   echo "<td><input type ='radio' name='president' id='". $row->studid ."' value='" . $row->fname . " ". $row->mname ." ". $row->lname ."' onchange='get_president_value()' ></td>";
      echo "</tr>";
            }
    echo "</table>";
           }
        // if there are no records in the database, display an alert message
           else
            {
                echo "No results to display!";
          }
           }
            // show an error if there is an issue with the database query
                    else
                    {
            echo "Error: " . $mysqli->error;
                    }
              // close database connection
                    $mysqli->close();
            //    <a href="records.php">Add New Record</a>      
            ?>
        //here is my reset button that resets my radio buttons
            <form name="editform" method="post">
      <input type="reset" name="reset" value="Clear" id="candidate2" onClick="clear()">
     </form></div>

Java脚本代码使用tableid.rows.length获取行数；
if（tabLen==1）{return；}//其仅平均标头不返回任何数据
其中rowId在创建表时给出类似于“userRow”的rowId字符串；
对于（i=1；i
我们可以看看你的html吗？对于这一点，可能有一种更有效的方法。我在想
getElementsByTagName
。另外，根据您目前提供的内容，我几乎不知道您在问什么，也不知道您的页面/html/js如何协调工作。您试图在
元素中存储什么？现在您正在使用
&&
运算符将其设置为
document.getElementById（'president'）
的返回值，但前提是
document.getElementsByName（'president'）
返回真实值。@mrtsherman。。请帮助我…@Jonathan..我在elems上存储的是重置按钮的名称和表数据的id，但只有重置按钮在“editform”表单上。你能在中创建一个演示吗
   <?php
   // get the records from the database
      if ($result = $mysqli->query("SELECT * FROM candidate_info WHERE position= 'president'"))
       {
        // display records if there are records to display
          if ($result->num_rows > 0)
         {
           // display records in a table
           echo "<table border='1' cellpadding='10'>"; 
            // set table headers
         echo "<tr><th>Student ID</td><th>Course</th><th>Name</th></tr>";
             while ($row = $result->fetch_object())
               {
             // set up a row for each record
              echo "<tr>";
            echo "<td>" . $row->studid . "</td>";
   echo "<td>" . $row->course . "</td>";
        echo "<td>" . $row->fname . " ". $row->mname ." ". $row->lname ." </td>";
   echo "<td><input type ='radio' name='president' id='". $row->studid ."' value='" . $row->fname . " ". $row->mname ." ". $row->lname ."' onchange='get_president_value()' ></td>";
      echo "</tr>";
            }
    echo "</table>";
           }
        // if there are no records in the database, display an alert message
           else
            {
                echo "No results to display!";
          }
           }
            // show an error if there is an issue with the database query
                    else
                    {
            echo "Error: " . $mysqli->error;
                    }
              // close database connection
                    $mysqli->close();
            //    <a href="records.php">Add New Record</a>      
            ?>
        //here is my reset button that resets my radio buttons
            <form name="editform" method="post">
      <input type="reset" name="reset" value="Clear" id="candidate2" onClick="clear()">
     </form></div>

Java Script Code use tableid.rows.length  take number of row;

        if(tabLen == 1){ return;}//its mean only header remaning no data 

        where rowId while creating table giving rowId string like "userRow" ;
        for (i=1; i< tabLen; i++)
                {
                    if (document.getElementById(rowId+(i-1)) != undefined)
                        tableToBeDeleted.deleteRow(document.getElementById(rowId+(i-1)).rowIndex);
                    else if (document.getElementById(rowId+"_New") != undefined)
                        tableToBeDeleted.deleteRow(document.getElementById(rowId+"_New").rowIndex);
                }