Danh mục : Ajax - Jquery

Ajax - mysql Example 1 : Xóa 1 cột dữ liệu với Ajax

Database Table Code A simple database table two columns msg_id and message. CREATE TABLE updates( msg_id INT PRIMARY KEY AUTO_INCREMENT, message TEXT);   delete_random.php Contains PHP code displaying records from database. Take a look at class="delete_button"

Database Table Code
A simple database table two columns msg_id and message.

CREATE TABLE updates(
msg_id INT PRIMARY KEY AUTO_INCREMENT,
message TEXT);

 


delete_random.php
Contains PHP code displaying records from database. Take a look at class="delete_button"

<ol class="update">

<?php

include("dbconfig.php");
$sql="select * from updates order by msg_id desc";
$result = mysql_query($sql);
while($row=mysql_fetch_array($result))
{
$message=stripslashes($row["message"]);
$msg_id=$row["msg_id"];

?>

<li>

<?php echo $message; ?>
< a href="#" id="<?php echo $msg_id; ?>" class="delete_button">X</a>

</li>

<?php

}

?>

</ol>


jQuery code
Contains javascipt code. $(".delete_button").click(function(){}- delete_button is the class name of anchor tag (X). Using element.attr("id") calling delete button value. If id value is even number if(id(even) % 2) = If(0) false

<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(function() {
$(".delete_button").click(function() {
var id = $(this).attr("id");
var dataString = 'id='+ id ;
var parent = $(this).parent();

$.ajax({
type: "POST",
url: "deleteajax.php",
data: dataString,
cache: false,

success: function()
{
if(id % 2)

{

parent.fadeOut('slow', function() {$(this).remove();});

}

else

{

parent.slideUp('slow', function() {$(this).remove();});

}

}
});

return false;
});
});
</script>


deleteajax.php
Contains PHP code. Delete record from the database.

<?php
include("dbconfig.php");
if($_POST['id'])

{

$id=$_POST['id'];
$id = mysql_escape_String($id);
$sql = "delete from updates where msg_id='$id'";
mysql_query( $sql);
}
?>


CSS Code

*{margin:0;padding:0;}

ol.update

{
list-style:none;font-size:1.2em;
}

ol.update li

{
height:50px; border-bottom:#dedede dashed 1px;
}

ol.update li:first-child

{
border-top:#dedede dashed 1px; height:50px;
}

#main

{
width:500px; margin-top:20px; margin-left:100px;
font-family:"Trebuchet MS";
}

.delete_button

{
margin-left:10px;
font-weight:bold;
float:right;
}

 


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