Null And Undefined Values Being Returned From A Function?
Aug 21, 2009
Whenever i try to use this function it gives me either -NaN, or undefinedwhat am i doing wrong? The objective of these functions are to change x and y coordinates into SAN (Simplified Algebraic Notation) for use in the Chess Game's DataFile (PGN file format).Live Running DHTML App:http://daomingjin.googlepages.com/ChessManager.html140kb Zip-Archive:http://daomingjin.googlepages.com/ScoreMatev1.ziphere are the functions in Question:
function XCoordToSAN(x)
{
// Convert the x coordinate of the piece to partial SAN (Simplified Algebraic Notation)
[code]....
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Nov 14, 2011
I'm getting an error message that says that my function is null or undefined. I figure it' something simple, like maybe a ( instead of {, but I can't seem to find it.
Here's the script from the header:
Code:
<script type="text/javascript">
var time = new Date();
var dayNight = time.getHours();
function displayImage() {
if (dayNight >= 9 && dayNight <= 14) { .....
And from the body:
Code:
<body onload="displayImage()">
<div>
<img id="highlights" src="" alt=""/>
</div>
</body>
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Jun 26, 2009
My code looks like this:
$('#edit' .postcontent').load('admin-ajax.php', {'action':'qe-
getpost'});
Everything works great - the returned value is loaded into .postcontent perfectly. However, a 0 is appended to the end. Every time. Even if I return nothing, a lonely 0 shows up inside .postcontent.
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Jul 18, 2007
Its an AJAX script which create mulitple choice dropdown boxes connected to a database. the Javascript works great on both FF and IE. However, in IE i get the irritating error code:
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Aug 10, 2009
im having a little difficulty checking if an XML node has a value, here the code:
var Divs=new Array("artist","bio","img","date","tickets","venue","street","city","country","headliner");
xmlDoc=xmlhttp.responseXML;
for ( nodes in Divs )
[code]....
This always throws up the error: document.getElementById(Divs[nodes]) is null ive tried putting the xmlDoc in a variable then checking if its null but no luck, also tried the same method against "undefined" but no luck either.
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Jul 21, 2010
I am trying to track down why this custom validator is failing with an error that args is undefined. There are two funnctions - one works and one does not.the bold italicized item is where the error is being generated.Function validHygieneNote works as expected however.
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Mar 1, 2011
I have a bug that is only seeming to effect IE 8.Also has a weird display issue in IE8, but not in "compatibility view", which the bug may fix. Works and looks beautiful is Safari and Firefox.
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Jan 12, 2010
I started getting a wierd problem with my jscript program. Here im using jscript for client-side validation and upon email field submission,im getting undefined value with an error saying "length is null or not an object". All the values of fields prior to that are being obtained properly.
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Feb 2, 2011
I have a script that post some values to a php file and on it if i echo or return anything i cant get the value,
the alert is always empty
$.post("file.php",{x}, function(data){
alert(data);}
php file
echo 'test';
also tried with return but also get an empty alert
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May 13, 2011
I've set a cookie with a name-value pair of warning=none/block. I'm then aiming to use this to set the CSS when the page loads, for a particular element. The cookie sets okay, but I don't know how to read it into the CSS. This is the HTML:
[Code]....
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Jul 20, 2005
What I have is a normal ASP web page wih javascript. The javascript
needs to call a payment gateway, but the only way to get to it is
https://paymentgateway/external.pl with parameters.
What is returned is a string containing several lines of information.
This information I need to formulate into my own page..
At present, I use document.location = https..... but of course this
displays the called page (above) in the browser screen with the
results.
Im sure this can be done, but how can I call this gateway webpage
without showing it (so the user would just see my please wait page)
and retrieve the data when it comes back (within 6 secs).
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Sep 1, 2010
All of the following works fine - except when I put in the switch() to adjust a value returned
$.getJSON( urlCalled, parametersUsed, function(dataReturned)
{
pj= dataReturned;
[code]....
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Mar 1, 2010
So i got the jquery autocomplete working on my website, but im unable to make the returned values links they have the a tag but nothin happens when you click them... an example is here..[URL]..
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Jan 5, 2007
I have a form that I am using to generate an email with several user
selected fields being part of it. As part of this form, I have a select
box which allows the user to select which email addresses it should be
sent to. The box works great except that the CGI script I'm sending the
values to can only parse a single line for each field in the form. The
issue comes into play when someone selects more than one value in the
select box, the output of the select box seems to separate each value
on a separate line using a line feed (or carriage return, I can't
tell). The format that the CGI script needs is for a single line with
each of these values separated by a comma. I'm confident that a
javascript can do this fairly easily, but unfortunately, I am not very
well versed in javascript. I've found a few code snippets on the web
that I've mangled together, but since I don't really know what I'm
doing, it isn't working out so good. I've included what I have in the
form right now below (note that I've removed all of the other form data
but the select box code to save space). Code:
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Jun 4, 2010
I'm currently using this bit of code which submits some form values to a php script which then returns the results into the target html as specified.
Code:
$("#ajax_totals").load("shop/calculate_order_cost", $("#shop_form").serializeArray());
However what i'd like to do is submit the form items using serializeArray but then return multiple items from the php script and insert them in multiple places on the page, not just in the form itself.
I know i could simply use that line of code 4 times over with 4 different html targets but i don't feel it is very efficient or DRY. So i'd like to know the best way to submit multiple values to a php script, return multiple responses and use those responses in multiple places in the html.
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Oct 25, 2011
I am asking jQuery to tell me which drop down option is selected in a drop down list - like this:
I would like to check if this was successful before I proceed. What are the possible return values for this statement?
If no id exists.
If no option is selected.
If some other problem occurred.
In these cases am I expecting a null return; an undefined return, a false return value?
And, based upon the complete set of return possibilities, what would be the best and most comprehensive tests I could apply to cover every base.
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Oct 15, 2009
I have come across an issue that only happens with IE.I have a custom save function that is designed to handle different ajax submits but I will simplify it for debugging. The issue is that once I make a submit everthing is fine at first. Then once I try to submit a second time it craps out. I am checking to see if there is an onsubmit function and then executing it like so before continuing. After the inital submit it is no longer found. When I alert the typeof document on the form it returns object but when I add the onsubmit it says object expected or object is null or undefined.
Code:
function secureBarSubmit(formId)
{
alert(typeof document.getElementById(formId)); // object always
alert(typeof document.getElementById(formId).onsubmit); // func first time then it is broken
[code]...
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Mar 31, 2010
I would like to ask your help regarding this damned error message that comes out only in Internet Explorer and makes impossible to submit the form.
The javascript code is:
function checkForm() {
var cname,
[code]....
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Apr 26, 2010
So there is this string i need to parse as xml:
<station><code>GB0923A</code><city>ABERDEEN</city><population>215.000</population><component><name>Nitrogen dioxide (air)</name><unit>_micro;g/m3</unit></component><component><name>Nitrogen oxides (air)</name><unit>_micro;g NO2/m3</unit></component></station>
Now what I do is: -use this function to create xml doc from string
[Code]...
the stirng shown at the beggining is passed to "response" (var response= xmlhttp.responseText;). Now for some reason all 3 values displayed are null... I am trying to figure why for last 2hrs but i cnt see any reason why they shouldnt be the actual values of nodes in the string...
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Aug 10, 2011
I have scoured the internet looking for the right code but to no avail. I have gotten as far as totaling up my form but now want to format the amounts and total as currency and also want to strip out the values that =0. I have tried to use the code from other solutions (posted on the net) but I just think it is over my head because I cant figure it out. I thought I was close a few times but wasn't able to bring it on home. One of my issues is using somebody's code and not knowing where in my code to place it. [URL]
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Mar 31, 2010
I would like to ask your help regarding this damned error message that comes out only in Internet Explorer and makes impossible to submit the form.The javascript code is:
// JavaScript Document
function checkForm() {
var cname,
[code]...
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May 13, 2011
I am creating a little word guess game, with a random function which picks the word from an array of 10 words. The second function checks if the users' letter choice is part of the secret word. Currently, each time the checkGuess() function is called, the word is changed, probably because I am calling the wordPicker() function from within. The wordPicker randomly chooses the word, then returns that word. All I want to do is pull that word into the checkGuess function, without calling the wordPicker function as it currently does. Here is the code:
Create secret word array
var wordList = new Array("stealth", "telephone", "internet", "nickel", "marine", "instantiate", "method", "function", "television", "monitor")
[Code]....
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Sep 1, 2007
I'm moving from php to JavaScript. What I want to do is assign a value to a variable only if the variable hasn't been assigned yet.
In php it would be:
if($variable=='')
$variable='default value'
I thought the equivalent in javascript would be:
if(variable=='')
variable='default value'
Can anyone explain why this doesn't work, or what I should do instead?
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Apr 7, 2009
I keep getting <undefined> when I alert out the value of my array 'fadeimages1'. Using php/mysql I retrieve filenames from a directory and create <INPUT> fields to store the filenames. In the javascript portion of the code, I use getElementsByName() to retrieve all of the <INPUT> fields. I then declare an array, 'fadeimages1'. Next, using a for loop I try to copy the values from the <INPUT> fields into the array 'fadeimages1'. When I alert out the length and value variable for each <INPUT> field, I get the correct filename, but after trying to store the value into 'fadeimages1' array, I get value is <undefined> when I alert it out. BTW, the following code uses 'fadeimages1.push()', but I also tried 'fadeimages1[i]=...'. Both result in <undefined> values.
[Code]....
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Oct 5, 2011
we are using Map guide for viewing maps and printing.
while printing a map the above mentioned error (Returned statement outside of function) is coming
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Apr 1, 2010
When I use the ajax function to grab the remote content of some page, I would like to then apply jQuery selectors to that data. Does anyone know how this can be done? Let's say that I just grabbed the content from an html page. I would then like to be able to use a standard: $("#someID").val() to get the content of that page element.
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