I am totally new to javascript..
1. I am taking data by opening text file from the server using javascript XMLHttpRequest
2. Using that, i am planning to plot data....
In the following code , i am setting global variable inside for loop .
[Code]...
How can I have global variables and global arrays whose value(s) can be modified and accessed by all the Javascript functions in my HTML document as well as by the HTML code?
View 1 Replies View RelatedI have some code that does this:
function openWindow(windowName){
timeStamp = new Date();
var timeStamp = timeStamp.getTime();
document.getElementById(window).style.display = 'block'
}
blahblahblah . . .
openWindow('order'); // calls openWindow function and sets timeStamp variable.
alert(timeStamp);
then I get error: timeStamp is undefined. Why? I defined it as a global variable within openWindow. Am I just doing this wrong?
I`m building a site with html and GIF files on one server and audio files on another. That means I have to use absolute references to the audio files.
Problem is, the site will probably dwell some day in other server(s), and may also use a different audio format. I like to be able to globally change url strings and suffixes of the referenced files.
I think I can`t use "base href" because relative references (to files that are on the local server) would be affected.
The code looks something like this:
<a onclick=document.all.music.filename="URL/FILENAME.ZZZ" ...
I like to set "URL" and "ZZZ" on a separate file.
I prefer to keep all my scripts in an external '.js' file. I am currently loading the external '.js' file from the header. Problem is I would like to declare a global variable in the external file, but I keep getting an error about the object does not exist.
Can someone tell me where or how to declare a global variable in an external file that is available after the page is loaded.
Is there a way to "pass" an XMLHttpRequest object to the callback
function for onreadystatechange? Or a way to access it from
onreadystatechange? I would like to avoid the use of a global
variable...
Example:
/* How do I get rid of this global variable? */
xmlHttp = new XMLHttpRequest();
function myFunc()
{
...
xmlHttp.onreadystatechange = myCallBack;
...
}
function myCallBack()
{
if (xmlHttp.readyState != 4)
{
return;
}
...
}
Any ideas?
Suppose I have global variables: x1, x2, x3
and I have a function that needs to assign a value to a new global variable
x4
something like
function foo ()
{
count = 0;
do {
count ++
varname = 'x'+ count
} while (globalExists (varname)
eval ( varname + ' = "I am new in the x-series" ' )
}
how would the function globalExists () be implemented ?
Here's my code:
//document.write("Test");
//Declare arrays
stats = new Array(6);
statMods = new Array(6);
/*
//Populate stat and statMod arrays
[Code]...
without first calling the other function that actually assigns values, it still works. As I said, though, if I assign values outside that function, then it all falls apart.
I've googled this and found a few different explanations that (as a PHP developer) are making absolutely no sense to me. I'm a total beginner with Javascript (not just jQuery) so a little help would go a long
[Code]...
i am having two global variables and i m setting their values on calling some function. After setting the values, i call a function in an object ...
if MyHint is an object and i am calling the function in it, but i am getting the values of global variables as undefined in the function of object MyHint. Is there any way to access the value of the global variables.
I'm new to javascript, but I need help and really hoping for a reply. I was trying to find an answer in Google but no result. So I have two table containing images, at the beginning only first table is displayed. Then when one of the images in the first table is clicked, a second table should appear, and user should click one of the images on that table. And that image should replace the one that was clicked originally in the first table.
So the question is, when the user clicks an image in the second table, how do I know what was originally clicked in the first one? I tried to use global variable but that doesn't work.
I cannot findout how I can write to global variables in a a JQUERY function.
<script type="text/javascript">
function checkusername (username ) {
$.post("[URL]", {
action: 5, username: username },
function(xml) {
result = $("apot", xml).text();
//<-- this variable is not global... why ??
message = $("message", xml).text();
//<-- this variable is not global... why ??
alert(message); //<--here variables are shown ok
alert(result);
});
alert(message);
//<--here variable is NULL !!
alert(result);
//<--here variable is NULL !!
}
</sctipt>
I'm having trouble letting functions I defined in jquery read javascript global variables I defined elsewhere.. for example I have a function defined within my jquery
$(document).ready(function(){
function performTabSlide() {
// do something with currentPosition;
[code].....
i have this problem in passing values to a variable in a jquery function.
i have a js variable that accepts a certain value and then i want to pass this variable in the jquery function.
For example, this is my script:
var autoScrollBool = "true"
var autoScroolInt = "10" (seconds)
stepcarousel.setup({
[Code].....
i want to replace the value of autostep: {enable:true to enable: utoScrollBool(the variable i created) , when i tried to assign it as is, its not working.
I have an HTML page which loads another page inside an IFrame. Each of the two pages has its own javascript code.
I would like to be able to define one global variable which will be accessed from functions in both scripts. The variable must be single. That means that if a script in one of the pages changes it, the change will be seen by the scripts in the other page.
I have an external js file used by an html page but I want to use global variables defined in the html page in the js file. for example...
<html>
<head>
<SCRIPT type="text/javascript"
var test = "1";
</SCRIPT>
<SCRIPT type="text/javascript" src="jscript.js">
</SCRIPT>
</head>
So I have var test which is defined in my .html but my jscript.js also uses the variable. I am doing it this way because I have a lot of pages that are simular using the jscript.js functions but each page has different quantities and values of variables used.
I'd like to move the global variables vertexBlaBuffer to the scope of the Geometry prototype [code]...
View 1 Replies View RelatedI've got a function displayResults(imageArray); that first calls removeElements(); to get rid of the currently displayed list items. Both functions are part of class function eventBox(array, string, date). both displayResults(imagearray); and removeElements(); have been bound to eventBox(); by e.g. this.removeElements = removeElements;
However, from within displayResults(imageArray); this.removeElements(this.identifier + "eventsul"); evaluates to "undefined". Also, this.identifier called from within the function also evaluates to undefined (it doesn't in other functions). For some reason I can't access global functions and variables from displayResults(imageArray);. Any ideas?
Here is the code for displayResults(imageArray); :
//<input type="text" id="s_field" value=""/>
var valid = true;
var div = $("#s_field");
$.post("index.php",{id: 6}, function (data){
[Code]..
When posting data, and getting response need to set valid to false - email is not valid.
1. in function it alerts valid is false
2. outside function it says valid is still true!
even i didn't wrote var valid = false;, but valid = false;I need to set Global "valid" variable to false.
I am using ajax in my site and want to implement a friend request button. When a user clicks this button their userid and the userid of the friend thwey are requesting will go into a table called notifications in my mysql database. This works fine in regular html/php with javascript disabled but not when using javascript/ajax.
Here's my code which may clarify things:-
Code:
<script type="text/javascript">
function makeRequest(friendrequestloggedinuserid, friendrequestuserid)
{
if (window.XMLHttpRequest)
[Code]....
The above code works perfect if javascript is disabled and the button is clicked as the new row is inserted into the database however if javascript is enabled the alert shows inidicating the ajax file is working but the new row is not inserted. Is this something to do with the POST process between my javascript code and my ajax_processrequests.php file?
BTW $loggedinuserid and $userid are retrieved earlier on in my code but showing how they are retrieved is irrelevant to this because I know they are present at the point of the above code.
I am posting two variables to a php page:
$.post('poll_receiveData.php', {question:currentSlide, vote:vote},
function(output){ ... })
}
currentSlide is set to 0. vote is set to 2. When I look at my console log, these are true. But in poll_receiveData.php, I'm unable to use a conditional statement with $vote. It's like the program doesn't know how to compare things to $vote. But a SQL statement using $question works just fine. Here's my code:
[Code]...
I have a global variable which does not want to change :
<header>
....
<script type="text/javascript" language="JavaScript">
var i=1;
function swap()
{
var window.i = 1 - window.i ;
}
.....
</script>
....
<body>
<A href="" ... onclick="swap()"<img src="pix/star.gif" </A>
when clicking on 'star.gif', i does not change from 1 to 0 ...
Any clue ?
[URL]
i cant get a caption specific to each image to display under the arrows when the image changes. it is especially hard for me because i have to edit the javascript which confuses the **** out of me. it seemed so simple....
ps i cant start an id with a digit? it doesnt seem to cause any problems...why is it stated that this cannot or shouldnot be done?
I am developing a website with videos using flowplayer video script. When the visitor goes to the video page, it will play a default mini video (video.flv) and an onCuepoint is setup where an image shows up at a given interval. If the visitor clicks on the image, he will be directed to a page where he can watch the full video. I also have setup a playlist with four additional videos (video1.flv, video2.flv...). When the visitor clicks on any of the four links, a different video plays on the same page. On each video on the playlist, I want the same 'click_here.jpg' image to appear but with a different URL destination.
View 4 Replies View RelatedI am trying to get a div's content to change using javascript but for some reason it is not working and i get no errors looking at the error console.the code that is waiting for the content...
<div style="font-weight: bold;">count = <div id="desc" style="float: left;"></div> descriptions to do.</div><br clear="all" />
the code that should change the content....
<? echo("<script type="text/javascript">
document.getElementById('desc').value='" . $count . "';
</script>");
?>
when i view the source code the javascript lines show like so...
<script type="text/javascript">
document.getElementById('desc').value='373';
</script>
do i have the javascript correct ?
I am trying to set up .focus and .change events on all of my form elements, but Javascript is telling me this.change is not a function:
$('#CreditCardCheckoutForm').find('input, select, textarea').each(function(index) {
this.focus(function() { resetExitSurveyTimer(); });
this.change(function() { resetExitSurveyTimer(); });
[code]....