如何從php

Question

獲得單選按鈕值我想要在php中獲得單選按鈕值。事情是我在一頁中下拉菜單，當我從下拉列表中選擇一些值時，它將值發送到ajax和PHP和PHP頁面它正在生成單選按鈕。

現在我想要獲得單選按鈕值。我怎麼才能得到它？

代碼

的index.php

<script> 
        function showUser(str) { 
         if(str=="") { 
          document.getElementById("txtHint").innerHTML=""; 
          return; 
         } 

         if(window.XMLHttpRequest) { 
          xmlhttp=new XMLHttpRequest(); 
         } else { 
          xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
         } 

         xmlhttp.onreadystatechange = function() { 
          if(xmlhttp.readyState==4 && xmlhttp.status==200) { 
           document.getElementById("txtHint").innerHTML=xmlhttp.responseText; 
          } 
         } 
         xmlhttp.open("GET","gettheater.php?q="+str,true); 
         xmlhttp.send(); 
        } 
    </script> 


<div id="txtHint"> 


</div> 

代碼： gettheater.php

<?php 
$q = strtolower(trim($_GET["q"])); 

try { 
    $dbh = new PDO('mysql:dbname=theaterdb;host=localhost','tiger','tiger'); 
} catch (PDOException $e) { 
    echo 'Connection failed: ' . $e->getMessage(); 
} 

$sql = 'SELECT address FROM theater WHERE LOWER(theater_name) = :q'; 

$sth = $dbh->prepare($sql); 
$sth->bindValue(':q', $q); 
$sth->execute(); 

echo "<form name='theater' method='POST'>"; 
echo "<table border='0' class='tabs'><tr><th>Theater Address</th><th>Select</th></tr>"; 

while($row = $sth->fetch(PDO::FETCH_ASSOC)) 
{ 
    echo "<tr>"; 
    echo "<td class='ad'>" . $row['address'] . "</td>"; 
    echo "<td>"; 
    echo '<input type="radio" name="address" value="43" />'; 
    echo "</td>"; 
    echo "</tr>"; 
} 

echo "</table>"; 
echo "</form>"; 
$dbh = null; 

?> 

Answer 1

從純JavaScript點，你可以抓住所有的單選名稱爲address，找到被選中的那個。

function getSelectedValue() { 
var addresses = document.getElementsByName('address'); 
for (var i=0; i < addresses.length; i++) { 
    if (addresses[i].checked) return addresses[i].value; 
} 
}