如何使用ajax刪除記錄？

Question

我試圖使用AJAX從數據庫中刪除記錄。 確認窗口不會出現，因此可以刪除記錄。 這是代碼..

<?php
$q = $_GET['q'];
$p = $_GET['p'];
$sql="SELECT * FROM course_details WHERE sem='" . $q . "' AND branch='" . $p . "' ORDER BY course_codes ASC";
$result = mysql_query($sql);        
while($row = mysql_fetch_assoc($result)){
  echo '<tr class="record">';
  echo "<td>" . $row['course_codes'] . "</td>";
  echo "<td>" . $row['course_names'] . "</td>";
  echo "<td>" . $row['course_instructors'] . "</td>";
  echo "<td>" . $row['course_credits'] . "</td>";
  echo '<td><div align="center"><a href="#" id="' . $row['course_id'] . '" class="delbutton" title="Click To Delete">delete</a></div></td>';
  echo '</tr>';
}
echo "</table>";
mysql_close($bd);
?>

這里$ p和$ q由另一個頁面的AJAX腳本發送。 它工作正常。 記錄按預期顯示。 如果我不使用AJAX顯示記錄，刪除工作使用AJAX。我用來刪除的腳本是：

<script src="jquery.js"></script>
<script type="text/javascript">
$(function() {
$(".delbutton").click(function(){
var element = $(this);
var del_id = element.attr("id");
var info = 'id=' + del_id;
if(confirm("Are you sure you want to delete this Record?")){
    $.ajax({
        type: "GET",
        url: "deleteCourse.php",
        data: info,
        success: function(){   
    }
});
    $(this).parents(".record").animate({ backgroundColor: "#fbc7c7" }, "fast")
    .animate({ opacity: "hide" }, "slow");
}
return false;
});
});
</script>

deleteCourse.php

if($_GET['id']){
    $id=$_GET['id'];
    $id = mysql_escape_string($id);
}
$del = "DELETE from course_details where course_id = '$id'";

$result = mysql_query($del);

Answer 1

問題是因為您正在創建動態元素，因此您必須使用delagate $(document).on()才能將click事件綁定到元素。 這是更正后的代碼

<script type="text/javascript">
        $(function() {
        $(document).on('click','.delbutton',function(){
        var element = $(this);
        var del_id = element.attr("id");
        var info = 'id=' + del_id;
        if(confirm("Are you sure you want to delete this Record?")){
            $.ajax({
                type: "GET",
                url: "deleteCourse.php",
                data: info,
                success: function(){  } 
            });
        }
        return false;
        });
        });
    </script>

和你的deletCourse.php

if($_GET['id']){
    $id=$_GET['id'];
    $id = mysql_escape_string($id);
}
$del = "DELETE from course_details where course_id = ".$id."";

$result = mysql_query($del);

希望這有幫助，謝謝

Answer 2

嘗試這個：

<script type="text/javascript" src="jquery.js"></script>

Answer 3

試試這個

 <script src="http://code.jquery.com/jquery-1.9.1.js"></script>

 <a href="#" id="1" onclick="del(this.id);return false;">delete</a>
 <a href="#" id="2" onclick="del(this.id);return false;">delete</a>
 <a href="#" id="3" onclick="del(this.id);return false;">delete</a>
 <a href="#" id="4" onclick="del(this.id);return false;">delete</a>
 <a href="#" id="5" onclick="del(this.id);return false;">delete</a>

JavaScript的

function del(id)
{
 var info = 'id=' + id;
    if(confirm("Are you sure you want to delete this Record?")){
        var html = $.ajax({
        type: "POST",
        url: "delete.php",
        data: info,
        async: false
        }).responseText;

        if(html == "success")
        {
            $("#delete").html("delete success.");
            return true;

        }
        else
        {
            $("#captchaStatus").html("incorrect. Please try again");

            return false;
        }
    }
}

ajax文件

if($_GET['id']){
$id=$_GET['id'];
$id = mysql_escape_string($id);
}
$del = "DELETE from course_details where course_id = '$id'";
$result = mysql_query($del);
if($result)
{
echo "success";
}

Answer 4

<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script>
function del(id)
{

 var info = 'id=' + id;
    if(confirm("Are you sure you want to delete this Record?")){
        var html = $.ajax({
        type: "GET",
        url: "deletCourse.php",
        data: info,
        async: false ,
         success: function() {
    window.location.reload(true);}
        }).responseText;


    }
}
</script>

<?php
$link=mysql_connect("localhost","root","") or die(mysql_error());
mysql_select_db("cart");
$sql=mysql_query("SELECT * FROM `details`");
echo "<table>";
echo "<tr><th>Name</th><th>NO of Items</th></tr>";
while($row = mysql_fetch_assoc($sql)){
  echo '<tr class="record">';
  echo "<td>" . $row['name'] . "</td>";
  echo "<td>" . $row['num'] . "</td>";

  echo '<td><div align="center"><a href="#"  id="' . $row['id'] . '" onclick="del('.$row['id'].')">delete</a></div></td>';
  echo '</tr>';
}
echo "</table>";
mysql_close($link);
?>