JQuery :: Prepend AJAX Data If Not Exists?
Nov 24, 2010
I've knocked together a simple chatroom app that gets new messages via an ajax call and prepends it to the list of messages. It does this by looking for the first hidden div with ID comment_counter, which contains the ID of the most recent message in the list that the client already has. The ajax call then makes a request to another page that returns a string of HTML with just the messages with an ID greater than the most recent one. That gets prepended to the current list of messages, the interval repeats, and so on.
The function looks like this:
setInterval(function()
{
var messageID = $("#comment_counter").first().html();
$.get("page.php", { m: messageID, b: <?=($post_id)?>, n: 'true' },
[Code]....
I haven't done any jQuery development prior to this, and it's been a while since a I did any web development anyway
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Aug 19, 2011
$(".DdsConstant").each(function (index, element) {
var text = $(element).html();
$(element).html(text + ":"); });
The above code works for me, but I want to be able to skip the elements that already have a colon or question markin it.Example: Search Name: or Perform this daily? should be skipped. But Search Name should be changed to Search Name:. I will put question marks in manually. I have tried a few things and done some searches but no luck.
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Oct 17, 2011
I am working on a registration page.I did all the validation but facing problem during username validation.when a user enter email id in the textbox,it first check whether it is present in database or not.. if not present "register successfully" otherwise "email exists"
[Code]...
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Apr 9, 2010
$(document).ready(function() {
$('#menu ul ul li').prepend('~ ');
});
This chunk of code is in a .js file that is link to every pages of the site I'm working on (called via an include). I linked another .js file to all the pages of a new section I'm developping. Is there a way to override or cancel the .prepend with my section specific .js file??
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Jun 27, 2011
I am using .ajax() to access cross-domain data using JSONP. Because I need to be able to cache the data I want to use a static name for thejsonpCallback function, so I have set the jsonpCallback option in the .ajax() request. However that appears to requires a global function whereas the auto generated function didn't (well maybe it did but that was all hidden from me).
I definitely need to be able to cache the results. Ideally I wouldn't have a global function handling the data. Is there another way to do this? If not what is the best practice way to go about using a global function these days and how do I provide it with the context of the object/module it was called from - which is where the data is needed?
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Jun 12, 2011
I use .prepend to add html contents in an existing html tag. When i view the source in IE i can't see the added content. I tried it with Chrome and it's working and see the contents immediately.
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Aug 5, 2009
I'm trying to retro-fit google ad-manager to an existing site. Currently, we have a div on every page and then have a header file which randomly selects an add and uses jquery.prepend to put the ad in that div. With google, we now have js code we need to use. How can we use prepend to add the js code and have it run? is that possible?
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Feb 23, 2010
Looking for some assistance with using hover on externally loaded content.I have a web page with a DIV that I LOAD with an external webpage.The external webpage once loaded has a DIV that when hovered over PREPENDs items to the DIV . This part seems to be working.hen the DIV is no longer hovered over the prepended items should be removed, but alas they are not.Please take a look at the following and point out my error.
<script type="text/javascript">
//ADD THINGS
$("#apDiv10").live('hover', function()
[code]....
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Jul 13, 2009
I am still new to jQuery and I am trying to figure something out. I have this code:
[Code]...
This is working fine on itself. What is does is when I click a link it loads data into the following div. When done loading it slides out. But I want to change the appearance of the slide. I have tried to do that like this: $(this).show("slide", { direction: "down" }, 1000); But this doesn't work. When I check firebug it says the following: o.easing[this.options.easing || (o.easing.swing ? "swing" : "linear")] is not a function
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Oct 27, 2011
How do I get href links from classes & append/prepend them to some element. My attempts...& many other I can't mention
[URL]
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Jun 12, 2011
I use .append() and .prepend() to automatically add content to a existing html tag with id. In IE the function is working fine but when i viewed it using view source i can't see the content. When i tried it with Chrome, i can immediately see the content. Is there something i missed out?
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May 31, 2010
i have a series of <select> fields. The first one, via ajax(), generates a 2nd one, based on the first ones' data with the .change() method. there is then a 3rd <select> - who's data will depend on choice of the second one although step 1 works, and i can generate the 2nd one, i still can't generate the 3rd one.
when i test the script on its own, both the 2nd and 3rd <select> fields are fine - but not via the ajax, which leads me to believe that the .change() from the 2nd one, isnt triggering the ajax call - its not being picked up (even the 'hello' alert isnt working).
[Code]...
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Nov 9, 2010
I am attempting to manipulate a long text string with javascript. This text string may have one or more occurrences of a string which starts with a particular string and ends with another string. So, for example, text that starts with 'nam' and ends with 'sit' in this example:
Lorem ipsum dolor sit amet, consectetur adipiscing elit nam aliquam leo sit amet nibh tincidunt ultricies. Nullam nam feugiat velit sit amet dui scelerisque id ornare nulla ultricies.
I want to prepend another string before the nam and append another after the sitt, to give me:
Lorem ipsum dolor sit amet, consectetur adipiscing elit before nam aliquam leo sit after amet nibh tincidunt ultricies. Nullam before nam feugiat velit sit after amet dui scelerisque id ornare nulla ultricies.
I think the way to do this is via RegExp, but I'm insufficiently familiar with this to know how to write the expression.
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Jul 30, 2009
I have a few input and textarea fields and when the submit button is pressed, I use $.ajax to send the data to a PHP script, which in turn, simply prints the data, which in turn is displayed in an alert msg box back in my callback. (The script will eventually load the data into a database but for simplification this is all it does for now).
The only problem, is that the $.ajax encodes/escapes special characters automatically and I can't figure out how to decode/unescape them to make them usable again. Here is the javascript (I simplified it to make it easy to understand):
$.ajax(
Here is my php ajax script (super simple)
So anyways, everything appears to work fine. I enter some info into 'myTextArea', and press submit. The script sends it to the PHP script, which it turn returns the same value and the javascript puts it in a message box.
So the problem specifically is if I send special characters like any of the quotes ' " (single or double quotes). Lets say my text area had this text in it: It's My "Birthday"
$.ajax sends the following data: It's My "Birthday"
So how do I unescape this? Ya, I could simply replace all backslashes, but I assume there are other characters it may escape in special ways I'm not sure about. What is the proper way to do it?
The only possible way I could figure out to do this was to use escape($('#myTextArea').val())
So the data gets sent as: It%27s%20My%20%22Birthday%22
And then use the PHP command "urldecode" on the other end. It turns out correct that way. However, that doesn't seem like the proper way to do it. Javascript 'escape' command was meant for escaping characters for sending GET variables and for sending formatted URLs. Not for text and input forms. Is there a better/more proper way?
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Jun 10, 2009
Currently, I'm building a website with jQuery. The function below helps me to get content from a database. In the file content_ajax.php there are some functions to handle ajax-requests. JS calls the PHP-function correctly (I've send an email to myself inside that function to check) but the script doesn't return 'succes' and doesn't give me an error...Also, when I put an alert inside the succes and error function, it doesn't popup!
What may be relevant: - site uses mod_rewrite for friendly url's
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Mar 3, 2011
I have the following piece of code:
$.ajax({
data: someData,
url: submissionUrl,
[code]....
where someData is a vanilla object of key/value pairs, submissionUrl is a valid URL and ajaxSuccess/ajaxError are both functions.Using jQuery 1.5.1, the GET request is delivered to the server without the data. Using jQuery 1.4.4, the request contains the data.Has something changed in the way I should be assigning data to an ajax request in 1.5.1? The docs don't seem to suggest I'm doing anything incorrectly.
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Dec 21, 2010
I've got an ajax call that runs a password verification. The username/password work fine but I can't get the php to send data to to the AJAX, instead it just echoe's the result in an alert box code...
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Jul 8, 2010
$.ajax({
So I'm loading the div#my_events by prepend(data) where "data" is another well styled div. Is there anyway to animate this returned data. Unfortunately I can't just specify a unique ID on the incoming data. So I was wondering how else I might be able to address this data I'm returning.
It is basically a topic list, with a modal that sends jquery to add a topic to the database, and returns the topic from the database, hides the modal, and displays the last added topic at the top of the topic list. Now I'd like it to do something slightly fancy like animate the color of the background to bring the user's attention to it.
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Nov 19, 2010
How do you assign .hover() to data received from an Ajax call? I have a post returning and I wanted to change the bgcolor of the containing div.
Posts.aspx
<div class="postContainerOut">
<div class="postItem">Column 1</div>
<div class="postItem">Column 2</div>
[Code]....
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Jul 12, 2009
I would like to send my form data to a php file but not to get any response. I want to send an ID so that PHP can do MySQL search and generate a PDF file. Problem seems to be that PHP is responding something back to HTML and that is messing my code. So I just want to send the data and run the scripit in PHP so that nothing is returned back to HTML.
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Sep 30, 2010
I really don't understand why I am getting this error (parsererror TypeError: data is null [object XMLHttpRequest]) after making the following AJAX request:
var base_url = $('span#base_url').text();
var model_url = "index.php/status/get_xml/"
$.ajax({
type: "POST",
[Code].....
So I am wondering why the .ajax function has an error, and yet the XML is being returned?
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Feb 27, 2010
I'm experiencing a weird problem when trying to do a $.ajax call. When I pass 5 variables, with either GET or POST, the script runs as I would like. However, when I use 6 or more variables, the script does not run. Does anyone know why this is?
Relevant code (stops1-5 are defined as JS variables earlier in my script, and the alerts are for testing)
$(".barcrawl-stop-id").each(function(){
alert("running ajax function");
$.ajax({
url: "/handlers/ajax/barcrawl_reorder.php",
[Code]....
So, the way it is now, it works fine (I get the first alert for each instance of .barcrawl-stop-id, and get an alert at the end with the returned data). However, when I add another variable to the data, like stop4: stop4, the script does not run (all I see is one alert with "running ajax function").
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Jun 1, 2010
I am creating a dialog using jQuery, and want to populate it with dynamic data. The data in question is properly formatted XML (parsed using jQuery). The call I make looks something like this:
function getXML() {
var $link = $(this);
var $dialog = $('<div></div>')
.load('xml_results_formatted_jquery.php' + ' #dialogcontent')
[Code]....
If I preview the xml_results_formatted_jquery.php file, I see the data so I know the webservice is being queried correctly. However, when I call my function above, the dialog box created has no text in it (apart from the text already present in the dialogcontent DIV). The bit that shows the results of the XML parse is empty.
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Apr 2, 2011
The answer to my question is probably very simple, but I'm having trouble making this work.
I want to access a local csv file, rearrange it into an array, and use the data later in my script. The logic of this in psuedocode is [code]...
Since the massaged data are in the callback, they're not available at ***. I've tried declaring the variables outside the callback as shown, but this doesn't seem to work either. I'm thinking there must be an easier way. Is there?
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Aug 23, 2011
I want to POST data to my personal website[code]...
If i run the code from my localhost it doesn't return anything
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Nov 12, 2011
I am trying to replace the names of each link in my html page with $f1 (Page) and replace some content with $f2 (Description).
How would I insert the data from this php file into my html page?
output.php:
mysql_connect(localhost,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");
$query="SELECT * FROM Pages";
$result=mysql_query($query);
[Code].....
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