What I did wrong to make this code not work. Can you put a variable in a function callback?
<script type="text/javascript">
var aaa = prompt('number?')
var obja = new Const(aaa);
functin Const(numb){
this.x=numb;
alert(obja.x);
}
</script>
This is the code. I tried exploring the options of SQL for solving this, but they are limited. I want to pass newSync[i].id to the onsuccess callback function, but I fail
Code:
I fail even if I add newSync[i].id as a third argument to function(tx,results)
I have been trying to figure this out for a few days now and have finally come to the point where I think I got it but may just need a little push to get what I want.
Heres the situation:
I have this function that uses ajax to access a database and returns the results in the responseText. That part is working fine, I have confirmed that the responseText contains the information that I need
**************code*****************************************
//new ajax already created and assigned to the variable xmlhttp//
var response_recieved = "some data";
function get_answer(Table_Name, Field_Name, Data_Type) {
[Code]....
As evidence by my posting, this is not working correctly. The variable response_recieved is coming up undefined outside of the callback function assigned to the onreadystatechangeproperty.
Based on the information that I have gathered online from various forums, I believe this issue has to deal with a problem with closure in the callback function assigned to onreadystatechange property. I don't think it has any. Based on the fact that there is no anonymous function in that function. But my problem is that the call back function is anonymous itself... I think???
get the variable response_recieved to survive outside of this function.
I am using jQuery 1.4.2 and I am trying to carry over the global variable totaltabs into my JSON callback function. The code seems to work properly, however, in my loadJSON function after the callback function loads the data, my totaltabs variable will not increment.
Here is a peak at my code.
totalItems is loaded from another function, not relevant to my example.
Code JavaScript:
var totaltabs = 0;
$(document).ready(function(){
resize();
[Code].....
I can't seem to get a variable declared from within a post callback, so that I could manipulate my script accordingly. I have delete.php, that deletes an id from a mysql db. If it fails, I want the script to stop and display the error. The .php script echos an "ok" if everything went fine, if not - it echos the error.var abort_error; // set the error variable
$.get("delete.php", { delete: $(this).parent().parent().parent().attr('id') },
function(data){
if(data != 'ok') {
[code]...
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
var global_var = false;
function test_func() {
$.post("server.php", function(data){
alert("Data Loaded: " + data);
[Code]...
I am trying to convert some of my javascripts into a class and am
running into difficulties which i think are related to variable scope.
Basically I have a constructor function for a calendarInput class that
takes 4 parameters, the first is a reference name/number for this
input. I also have some functions for importing my PHP classes into
Javascript using AJAX (properties only. still trying to get methods
working but that's another story!). The relevant function is called
call_object_method(classname, methodname, createparams, methodparams,
post, callbackfunction). This creates an instance of the specified PHP
class using the parameters in createparams. It then calls the
specified method using the parameters in methodparams. The result is
passed back to the javascript function specified in the callbackfunction parameter (ie the value of xmlhttp.onreadystatechange is set to callbackfunction before xmlhttp.send() is called)
The function i am trying to fix is called show (x,y) which creates the
html for the calendarInput and displays it at co-ordinates x, y.
So, my code is as follows:
function calendarInput(calendarid, target, displaytarget, value)
{
this.calendarid = calendarid;
this.target = target;
this.displaytarget = displaytarget;
this.value = value;
this.show = function(x, y)
{
<!--// bunch of init and prepping code. includes creating
createparams and methodparams arrays //-->
call_object_method("cms_calendar", "getcalendarview",
createparams, methodparams, false, this.showcallback);
}
this.showcallback = function()
{
alert(this);
<!--//code to create html//-->
}
}
I know i've cut out most of the innards of this. This is because I
have already tested these functions and had the calendarInput working
outside of a class, hence am pretty sure that this is ok (plus it runs
to almost 1000 lines these days!!). My problem is that when I call the
show method, the alert on the first line of the callback function
returns the function showcallback instead of (as i was expecting) the
instance of the calendarInput object. Whilst this kinda makes sense I
can't figure out how to reference the Object instead. I have tried
'this.parent' but this returned undefined. I have tried changing the
way i reference the callback function (ie the final parameter of
call_object_method) but no joy.
how can i write a function that accepts a callback function?[URL].. i want myFunction to load some data via(an unordored list actually) load method end then somehow to return the wrapped elements for the callback function, exactly like load() does.
View 6 Replies View RelatedI have created a click event handler on an anchor and can reference it using $(this) just fine until I include a $.post function which processes the return data using a callback function. Once in the callback function, the $(this) no longer works.
How can I refer to the clicked anchor from within the $.post callback function? After way too long trying different combinations of things and making it work and break, I am first of all assuming that is what is going on, i.e. that once I am in the callback function, I no longer have access to $(this).
I'm trying to do some animation designs. Basically where I'm stuck is I have a bunch of things I want to do, but not until the duration of the switchClass method is complete. Looking at the UI documentation site, there doesn't appear to be a callback ability. how I can make a callback on the switchClass?
View 2 Replies View RelatedHow do I add a callback function to a plugin so that i can execute another function after the plugin completes its own processes.
View 2 Replies View RelatedWhen i use
$(".rateit").click(function(){
$(this).next(".rateoptions").html('My options data here');
});
It works smoothly, But when I use this in a callback function it doesn't work as follow;
$(".rateit").click(function(){
$.get("test.php", function(data){
$(this).next(".rateoptions").html(data);
});
});
I think that in jQuery 1.6 the callback function is failing in IE(8).I've reverted back to jq1.4 and all is okay. Sample code that fails in 1.6 for IE
8;$('#add_edit_contact_content').load('company/ajax/dsp_addEditContactContent.cfm', function(){
alert('loaded');
});
The error reported is; Message: Could not complete the operation due to error
80020101.
Line: 16
Char: 11777
Code: 0
URI: http://localhost:8300/XXXXXXXX/application/scripts/jQuery/jquery-1.6.min.js
how i can use a callback function with remove() of jquery api
View 1 Replies View RelatedHaving a really hard time getting this to work, could use a little guidance on what I'm doing wrong....the code should be fairly self explanatory....
function callbackTest(file, callback)
{
$.get
[code]....
I have some problem using the $.post function. I wrote a function that test if a username is already used in my database. That function must return true if the username is free and false in the other case. My problem is that I use the $.post function and I put the return true; and return false; in the callback function. So it's the callback function that returns true/false instead of my function !
Here is my code :
function validateName(){
$.post("ajax_is_name_used.php",
{name: $form_name.val()}, function(data) {
if (data.success == 1) {
$form_name.addClass("error");
return false; // Problem, we are in the callback function !
} else {
return true; // Problem, we are in the callback function !
}}, "json");}
I'm a jQuery novice and I think I've gotten myself in over my head here. I have a #Calculatebutton with a click function attached which, when clicked, iterates through a form and sends the users input values, via $_GET, to a php script called'prepsession.php'. Here the inputs are validated and sanitized, a session is started and some session variables are created using the form input values. If there are any errors I want error messages displayed beside the form. Everything works fine up to this point.
If this script runs ok without giving any errors I would like to fire another php script called'printsummary.php'which accesses the previously created session variables and inserts them into a div #PanelContent. The reason I am usingseparatephp scripts for this is that I would like to be able to print my data in various different ways so I have numerous php print scripts accessing the session variables.
[Code]...
I am trying to implement the getJSON function.
My code for utilizing the getJSON follows:
Where un in a reference to a Textbox.
I can debug and verify that the call to
Occurs and return correct answers.
My problem is that the "success callback function" of the getJSON function is NEVER called.
Is there a way to pass arguments to the callback function used inside an addEventListener? I see that I can only list the name of the callback function. For eg, I use this:
var boldLink=document.getElementById('cmtbold');
boldLink.addEventListener("click", rBold, true);
I need the id of boldLink to be accessible from inside the function
rBold()
$("#scroll").hover(function(){
$(this).find(".front").stop().animate({
top:"184px"},500,function(){
$(this).find(".front").stop().animate({ top : "7px"}, 300);
});
});
I try to make a scrolling picture. when mouse roll over the image with .front class will scroll down, but it has to come back after mouse roll out. the scroll down is working but I wrote a callback function, but it doesn't work.
html part
<div id="scroll">
<a href="../images/big_html/babytracker_b.png">
<img src="../images/thumb_html/jukebox.jpg" />
<img src="../images/thumb_html/Tracker.jpg" class="front"/>
</a>
</div>
am having a little bit of trouble with a callback function that seems to be executing immediately rather than waiting for the animation to finish.
[Code]...
I'm trying to build a confirm dialog box. If found a nice plugin [URL] but the behavior is not like a normal confirm dialog box. You have to add a callback function to react on the ok/cancel buttons. Is it possible the simulate this behavior so I can have a function like this:
function showConfirmation(title, text){
//this displays a jQuery Dialog form and returns true/false
return myjQueryConfirm(title, text);
}
I tried this with the plugin:
function showConfirmation(title, text){
var res;
jConfirm(title, text, function (r) { res = r;});
return res;
}
But after the jConfirm is executed, the function proceeds and immediately returns res which is not defined.
I'm trying to execute a simple JSON request using getJSON but I can't get a successful response. My code is below. If I run this I always receive an error. If I add "callback?" (making it JSONP) then I can see the correct results in Firebug but the call back function is never executed.
function getResults(url) {
var gptUrl = "[URL]";
$.getJSON(url, {f: "json"}, function() {
alert("success");
})
.success(function() { alert("second success"); })
.error(function() { alert("error"); })
.complete(function() { alert("complete"); });}
I have following code in Javascript. I m calling live handler using jquery and get responsein json format but I get following problem while getting json response:When I call tnSearchClick() function on button’s click at that time the handler will call usinggetJSON method of jQuery but the response will take some seconds of time to returns response so that after few seconds the callback function will call and response can be accessed from callback function but because of handler get some seconds to execute remaining code in tnSearchClick() function after handler call code get executed before callback unction(before resonse will come) The following code will be executed before callback function will call(before response will return from handler)
if
(isValidate == true
)
[code]....
I am using a json from a Google spreadsheet and a jquery plugin which is called throught this HTML line <ul id="example">.The thing is that when I dynamically append elements to the <ul id="example"> from within the JSON callback function, these are not recognized by the jquery plugin
Code:
<form>
<ul id="example">BLA BLA BLA</ul>
</form>
[code]....
If I insert an <ul id="example"> plus some <li> in the HTML code the plugin works perfect If I insert dynamically some <li> to the <ul id="example"> throught a javascrypt function before executing the callback (...json-in-script&callback=...) also work perfect.But when I insert dynamically the <li> elements within the callback function (in my case: cm_loadMapJSON) does not work well.
I know this is a simple question with a simple answer, but I can't seem to wrap my brain around it.Sorry for the infantile nature of this post. Anyhow, I am making an AJAX call via JQuery and need the function to return a value from a calling function, like so:
[Code]...
