Skip to main content

Populating a select list based on an index from another select list using jQuery and xml



I've been trying to fix a problem i've been having all afternoon and was hoping someone might be kind enough to help me spot my error.I've only started learning jQuery this morning and was trying to get this function working but its proving a bit of a pain in the proverbial...





I'm trying to populate a model select list based on a value from a make select list





My jQuery function looks like this:







$(document).ready(function()

{

$('#make').change(function(){

alert('Changing');

$('#model option').remove();

$('#model').attr('disabled',true);

$.ajax(

{

type: "GET",

url: "../xmlsource/models/model-"+$('#make option:selected').val()+".xml",

dataType: "xml",

success: function(xml)

{

alert('XML');

$(xml).find('model').each(function()

{

var name = $(this).attr('name');

var value = $(this).attr('value');

$('#model').append("<option value='"+value+"'>"+name+"</option");

alert('Cycling');

});

}

});

$('#model').removeAttr('disabled');

});

});







My test xml file looks like this:







<?xml version="1.0" encoding="utf-8" ?>

<models>

<model name="--Please Select--" value="0">

<model name="A1" value="1">

<model name="A2" value="2">

</models>







My HTML looks like this:







<form method="post" action="seller.php">

<table border="0">

<tr>

<td>Make</td>

<td>

<select name='make' id="make">

<?php

$manufacturers = simplexml_load_file('../xmlsource/makes.xml');

foreach($manufacturers->xpath('//manufacturer') as $manufacturer)

{

if(isset($trimmed['make']))

{

if ($trimmed['make'] == "$manufacturer->value")

{

?>

<option value="<?php echo "$manufacturer->value";?>" selected="selected"><?php echo "$manufacturer->name"?></option>

<?php

}

else

{

?>

<option value="<?php echo "$manufacturer->value";?>"><?php echo "$manufacturer->name"?></option>

<?php

}

}

else

{

?>

<option value="<?php echo "$manufacturer->value";?>"><?php echo "$manufacturer->name"?></option>

<?php

}

}

?>

</select>

</td>

</tr>

<tr>

<td>Model</td>

<td>

<select name="model" id="model">

</select>

</td>

</tr>

</table>

<div align="center"><input id="button" type="submit" value="Create My Listing"></div>







I've tested out the function as best as possible and it is loading the xml file successfully, but only hitting the first alert,it doesn't seem to enter the success conditional code.My apologies if this seems naive,but as I say i've got little experience on the matter





Any help would be greatly appreciated





Kind regards Herbie


Comments

  1. I was able to get it working in this jsFiddle (note the url and data parameters are specific to jsFiddle -- use your own URL and remove the data node).

    Here's the jQuery I used:

    $('#make').change(function() {
    $('#model option').remove();
    $('#model').attr('disabled', true);
    $.ajax({
    type: "POST",
    url: "/echo/xml/",
    data:{
    xml:'<?xml version="1.0" encoding="utf-8" ?><models><model name="--Please Select--" value="0" /><model name="A1" value="1" /><model name="A2" value="2" /></models>'},
    dataType: "xml",
    success: function(xml) {
    $(xml).find('model').each(function() {
    var name = $(this).attr('name');
    var value = $(this).attr('value');
    $('#model').append("<option value='" + value + "'>" + name + "</option");
    });
    $('#model').removeAttr('disabled');
    }
    });
    });


    Note that I use POST instead of GET. I also had to self close all your XML model nodes.

    ReplyDelete

Post a Comment

Popular posts from this blog

[韓日関係] 首相含む大幅な内閣改造の可能性…早ければ来月10日ごろ=韓国

div not scrolling properly with slimScroll plugin

I am using the slimScroll plugin for jQuery by Piotr Rochala Which is a great plugin for nice scrollbars on most browsers but I am stuck because I am using it for a chat box and whenever the user appends new text to the boxit does scroll using the .scrollTop() method however the plugin's scrollbar doesnt scroll with it and when the user wants to look though the chat history it will start scrolling from near the top. I have made a quick demo of my situation http://jsfiddle.net/DY9CT/2/ Does anyone know how to solve this problem?

Why does this javascript based printing cause Safari to refresh the page?

The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex