AJAX :: Return XMLDOM To A Function?
Jun 23, 2009
I'm not too good with programming, but I'm trying to get my feet wet with some nice little AJAX tools. I have some things currently working, but I'm trying to re-write the code so I can reuse these modules for a number of functions....As of now, I have a function that returns XHR requests [ ajaxRequest(){} ]. I am calling this function inside an XML Parser called [ ajaxParser(){} ]. Once that's created, I have the following code:
Code:
xmlDoc = new ajaxRequest() xmlDoc.onreadystatechange = function(){
if (xmlDoc.readyState == 4){
if (xmlDoc.status == 200){[code]....
At this point, I want the function to return an object that holds all the XML Node names, lengths, textContent, etc. I would like to be able to call this in any other function I write and begin traversing the nodes there. Something like root = new ajaxParser(file.xml);I tried "return parentMenuList;" except the length return is undefined. What I see in the DOM inspector is an object called root (with no other properties to it).
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Nov 14, 2011
I'm trying to make a call to .ajax and as a result set a value in a hash (for another call to jquery-ui)
I get the data coming back fine, could put in in a text field in html but not the hash where I want it.
Here below are the parts of my code that I'm using
//setting up datepicker
$(courseStartDateHtmlId).datepicker({
.....
defaultDate : ($(courseStartDateHtmlId).val() != "") ?
[Code].....
I thought that the value of startDate would end up as the defaultDate param for datepicker. No luck. Only an obscure little message in firebug console: "missing: before statement"
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Jun 9, 2011
I've been racking my brain for a couple hours now and doing a lot of searching and I cannot seem to find an answer. I want to know if it is possible to return the xmlhttp.responseText value from an AJAX function to the function that originally called the AJAX function.
Code:
//Set handler for server response.
xmlhttp.onreadystatechange = function()
{
[Code]....
I want to return the my_response variable to the original caller. No matter what I try I have been unsuccessful. I even tried assigning it to the global window variable using window.my_response = xmlhttp.responseText but it ends up being undefined.
Every example I've seen of using AJAX pretty much does something inside of the if (xmlhttp.status == 200) part to update the web page. I really do not want to do that.
Can I return the value?
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Jul 17, 2009
I am attempting to use the return value from a nested ajax function as the value for a variable in its parent. However, despite being able to successfully assign the variable within the nested function, it reverts back to its original value after the child function has terminated. Below is the code:
[Code]...
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Dec 6, 2010
I am having a problem of calling the user defined JS function after I make the AJAX call. Basically, I created couple radio buttons on the main html page. When the user clicks on one of the radio button, it will trigger the AJAX call and return another html file in the "div" content that I set in the main html page. The other html file contains a user defined JS function (e.g. "updateContent()") which use the onclick event handler to call the function. When I'm running the app, and click on the button. I had seen the firebug was complaining the "updateContent() is not defined" error. The function itself works fine and must be defined properly.
Here is the code in the main.html page:
Code:
<script type="text/javascript">
var asyncRequest;
function getTools(url){
try
[Code].....
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Dec 6, 2010
I am having a problem of calling the user defined JS function after I make the AJAX call. Basically, I created couple radio buttons on the main html page. When the user clicks on one of the radio button, it will trigger the AJAX call and return another html file in the "div" content that I set in the main html page. The other html file contains a user defined JS function (e.g. "updateContent()") which use the onclick event handler to call the function. When I'm running the app, and click on the button. I had seen the firebug was complaining the "updateContent() is not defined" error. The function itself works fine and must be defined properly. Here is the code in the main.html page:
Code:
<script type="text/javascript">
var asyncRequest;
function getTools(url){
try
{
asyncRequest = new XMLHttpRequest();
[Code]..script type=
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Jul 10, 2006
I'm loading xml files in order to populate some <selectoptions from
an xml file. i only need to fill these dropdowns on page load, so am
using XML DOM to fill them. Here's basically what the source XML file
looks like, abridged to only one record:
<?xml version="1.0" encoding-"utf-8"?>
<pilots>
<pilot>
<name>some, name</name>
<weight>188</weight>
</pilot>
</pilots>
Now, the following function loads the information ( i have reasons for
only using the microsoft activeXObject as opposed to adding Netscape
functionality): Code:
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Oct 17, 2007
I am trying to get a url attribute from an xml node:
<item>
<media url="http://blablabla.com" />
</item>
I can do this in IE with the following code:
var newDom = xmlhttp.responseXML;
var x = newDom.getElementsByTagName("item");
var urlNode = x[0].getElementsByTagName('media');
var myUrl = urlNode[0].getAttribute('url');
If I try this code in FireFox it gives me the following error:
urlNode[0] has no properties referring to this line : myUrl =
urlNode[0].getAttribute('url');
.............
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Apr 13, 2011
I'm still pretty new to javascript and dom, but have been coding with other languages for a while.When I try to compare a string to a .nodeValue it always fails, even if they are same. From what I've read typecasting is automatic in javascript or is this incorrect? For instance
var myGreet = "Hello";
var myFrag = myXML.lastChild.firstChild.firstChild.childNodes[0].nodeValue; returns Hello
if(myGreet == myFrag){ always returns false
alert(myFrag);
}
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Feb 14, 2011
I'm trying to "progressively enhance" one of my surveys using javascript. Basically, I have rating scales that make use of radio buttons as each point on the scale. Each radio button occupies its own cell in a table. I wrote some functions that will highlight cells on mouseover in a color corresponding to its position on the scale (e.g. the lowest point is red, the midpoint is yellow, the highest point is green). When a radio button is clicked, the background of the button's cell and preceding cells in the same row will be colored accordingly. The functions are working well in FireFox and Chrome (I just have to add a few lines using the addEvent function to make it compatible with IE).
The effect looks a lot nicer when I add a function that makes the visibility of the radio buttons hidden.
However, I want to make sure that there is a fallback option in case the functions that color the cells don't work for whatever reason. I would not want the radio buttons hidden in this case.
Is there a method whereby I can call the "hideRadiobuttons" function only if the other functions are successfully executed?
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Aug 7, 2009
i've got a function which makes a call to the database( via jquery $.post) to check if a username already exists. All the data I get back is fine and both the conditional statment works as intentded. I just can't get the function to return a value to the other function that calls it. Could this be something to do with the scope.
Code:
function checkIfUsername(o)
{
$.post(""+CI_ROOT+"index.php/admin/check_if_username",{
username: username.val()
}, function(data){
if(data.bool == true){
[Code]....
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Apr 28, 2009
I found that appending XML string as XML node will fail in IE, so I wrote a small plugin to solve the problem, here is my post: http://blog.darkthread.net/blogs/darkthreadtw/archive/2009/04/29/jquery-xmlext-plugin.aspx.
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May 21, 2010
I have researched this error/bug/mistake thoroughly with no success. I must be the only one experiencing it. Also, this takes place on every site I develop with jQuery ajax. It happens regardless of whether I use .get, .post, .ajax etc. Problem: The result returned to my ajax function always has a zero (0) appended to it.
[Code]
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Sep 12, 2006
Anyone know how to return true or false to an event handler based upon the results that come back from a Prototype Ajax.Request call?
I have a link with an onclick handler that calls a function getLoggedIn(), which looks like the following:
function getLoggedIn(type) {
ajax = new Ajax.Request(
'includes/checkloggedin.php',
{
method: 'get',
parameters:'&type='+type,
onComplete: checkLoginResult
});
}
As any analysis of request.responseText occurs in checkLoginResult(), not getLoggedIn(), how can I pass an Ajax-response-determined return value back to the event handler?
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Nov 27, 2006
I'm new to ajax and coded a script that returns the result of a php file. It is fine if it is just text, but if it has html included it prints out the tags instead of treating it like html. How do you treat it as html? I've heard of innerHTML but was told it isn't viewed as standard compliant and some browsers don't even support it.
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Sep 9, 2010
After end user had select then goto query the db then output to the result INPUT TAG is all need.[code]...
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Aug 9, 2009
I'm currently using the dialog functionality (modal form) from UI library to submit data to the database. All the validation checks have been running ok until one of the validation checks requires a ajax call to check if a username exist in the database. I'm fairly new to both javascript and jquery so this could be a fairly basic blunder. Initially, i thought it was an synchronicity problem, but I changed the $.ajax async option to true but still no joy, so maybe it something to do with scope etc?
Here's the code:
function checkIfUsername(){
$.ajax({
type: "POST",
url: ""+CI_ROOT+"index.php/admin/check_if_username",
data: ({username: username.val()}),
async: false,
dataType: "json",
success: function(data){
returnUsernameBool(username, data);
}});
}function returnUsernameBool(o, data){
if(data.bool == true){
o.addClass('ui-state-error');
updateTips("Your username must be unique");
alert('false'); //this works
return false; //still can't return bool
}else{
alert('true'); //this works
return true; //still can't return bool
}}
bValid = bValid && checkIfUsername(username);
alert(bValid); //still gives undefined
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Jan 25, 2011
Is it possible to get a return value from a page call within an ajax call? For example,
$("#new_request").click(function(e){
$.ajax({
url:"_insert_new_request.php",
type:"GET",
[Code]....
Here I make an ajax call from a click on a div. I then call "_insert_new_request.php" page, with a param of "partner_id_link".
Can I return a value from the "_insert_new_request.php"? and how?
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Mar 26, 2010
I am writing a contact form using jQuery AJAX POST and PHP. The form works well and sends the email. What I want to know is how to get the return values for error and success on the same page where the contact form is rather than having the message go to another page. I created a DIV called statusBox, and I would like all the messages printed there. Below is the fragment from the jQuery side. What do I need to do on the PHP side to get the values back?
[Code]....
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Aug 13, 2011
I have a mySQL that is continuously being added to and I need to make an AJAX function that checks the database periodically and only returns the results that it hasn't seen before.
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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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Aug 25, 2011
Based on a simple AJAX way, I can run a php process and return the result by this line Code: xmlhttp.open("GET","getuser.php?q="+str,true); There is another method using jQuery (e.g. in [URL]). But here, it shows a predefined message in these lines
Code:
//hide the form
$('.form').fadeOut('slow');
//show the success message
$('.done').fadeIn('slow'
How I can return the output of the php script within AJAX instead of this message?
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Oct 15, 2010
[code]....I have 2 DropDownList, like Master-Slave.This is my Default.aspx:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
[code]....
but there is nothing to append. Also I see the response in firebug windows as following(when I Select G2 from Master ddl):
[{"Value":"G2s1","Text":"SV1"},{"Value":"G2s2","Text":"SV2"}]
And for more specific view the following pic is the JSON tab in firebug windows when I select G3 in Master ddl:I change my success method of script with this new one for test:
function SuccessHandler2(data) {
$('select#Slaveddl').empty();
$.each(data, function (i, slaveValue) {
[code]....
So I think there is a problem with manipulate of return value (data).Also I try this one and just the first alert appear, apparently the (data.d) is null or unknown object:
function SuccessHandler4(data) {
var selection = $('select#Slaveddl');
$(selection).children().remove();
[code]....
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Sep 15, 2010
Im just getting started with Jquery, and now i have a little problem. I tried to search several solutions but none of them seems to work.
[Code]...
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Jun 13, 2011
I am using a dropdown box with 6 options. On change I want ajax to return part of an HTML/PHP page that corresponds to one of the 6 questions. I was trying to put and if statement on the return page to determine the part that I wanted but I didnt work. I rather not create 6 HTML/PHP files for each of the options. Here is part of the CODE
CREATE A:
<select name="mychoice" onchange="onchange_getform(this.value)">
<option>----Select----</option>
[code]....
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Jul 30, 2010
Below is JS code:
Code:
var request = new XMLHttpRequest();
request.open("GET", "http://127.0.0.1/get/file.json?filepath=c:\xxx.xxx");
request.onreadystatechange = function() {
if (request.readyState == 4) {
[Code]...
using above code, I wanna implement uploading/dowloading/parsing file with json format. however, the responseText always return null in FF. It it about to make me crazy.
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