ajax javascript复选框更改无法正常工作

Question

I am using the following ajax javascript to pass values if checkbox is checked or not, The problem which I am facing is that it is working only for the first row from the mysql fetch aray and for the rest of the results it always sends checkboxstatus = 1 as a result, no matter if the chekbox is checkied or not. here is the code:

<script>
 $(document).ready(function(e) {
   $('input[name=status]').change(function(){
    if( $('input[name=status]').prop('checked') )
       {checkboxstatus = '1';}
       else
       {checkboxstatus = '0';}
        var idm = $(this).attr('idm');
        $.ajax({
        type: "POST",
        url: "checkboxtestbackend.php",
        data: {"checkboxstatus": checkboxstatus,
        "idm":idm 
       },
        })        
        .fail(function(jqXHR, textStatus, errorThrown){alert(jqXHR+"--"+textStatus+"--"+errorThrown);});
    });//end change
  });//end ready
</script>

Usualy all the checkgoxes are checked in the first sql fetch if I uncehck the checbox it POST's 0 as value , but for the rest of the sql fetch results it always sends "1" as a POST result no matter checked or not.

this is the code which shows the checkboxes: <?php echo "<input type='checkbox' idm='$idm' name='status'"; if($row['status'] == 1){print "checked='checked'"; }echo "/>";?>

The visualizations of the status of the checkboxes is working but the change it is not.

This is the sql query fot it:

$sql = "SELECT * FROM cursos ORDER BY id DESC";
if (!$result = mysqli_query($con,$sql))
{
    die("Error: " . mysqli_error($con));
}


<?php

while($row = mysqli_fetch_array($result))
{   
    $idm = $row['id'];
?>

<td align="center"><?php echo "<input type='checkbox' idm='$idm' name='status'"; if($row['status'] == 1){print "checked='checked'"; }echo "/>";?></td>

Answer 1

This works for me...

I changed $('input[name=status]').prop('checked') to $(this).prop('checked').

<input type="checkbox" idm="stuff" name="status" value="1">
<input type="checkbox" idm="stuff" name="status" value="2">
<input type="checkbox" idm="stuff" name="status" value="3">  

<script>
 $(document).ready(function(e) {
$('input[name=status]').change(function(){
    if( $(this).prop('checked') ) {checkboxstatus = '1';}
                             else {checkboxstatus = '0';}
        var idm = $(this).attr('idm'); 
        $.ajax({
           type: "POST",
           url: "checkboxtestbackend.php",
           data: {"checkboxstatus": checkboxstatus, "idm":idm },
           success: function(response){
              console.log(response);  
             }
        })        
        .fail(function(jqXHR, textStatus, errorThrown){alert(jqXHR+"--"+textStatus+"--"+errorThrown);});
});//end change
});//end ready 
</script>