JQuery :: .css() Returning Blank String In FF & Chrome But "undefined" In IE
Jul 14, 2010
Using jQuery v1.4.2, Firefox 3.6.6, Chrome 4.1, IE 6,7,8.
I'm using jQuery .css() function to get the value of the css attribute "background". The attribute has not previously been assigned a value (either in script or style sheet).
e.g. alert($(this).css("background"));
In Firefox and Chrome, the return value is an empty string (""). However in IE 6,7,8, the return value is "undefined".
It also makes the following statement impossible:
alert($(this).css("background").indexOf("somepic.gif"));
Because css() in IE doesn't return a blank string, doing indexOf() raises an error.
cross-browser scripting compatibility, for jQuery to return a blank string *for all browsers* if the css attribute isn't set. Otherwise we have to check for both "" or "undefined" which is the sort of pain jQuery users are trying to avoid.
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Sep 19, 2009
I am using getJSON to get results from a different domain and i wantedto get _some_ object back when calling getJSON so that i can insertsome variables into the callback scope.Basically, what i wanted to do was this:
var new_json = $.getJSON(url, function(data) {
alert
(this.variable_from_caller);
[code]....
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Dec 10, 2010
None of my getElementById (or other) references produce anything but "undefined." This occurs in the latest versions of Fx, IE, Chrome, and Safari, so it must be something I am doing but not not seeing here. I have boiled it down to the following without success, and wonder whether there is some add on interaction. Fx 3.6.12 has the problem with this code:
<code>
<html>
<head>
<title>This is a test of getElementById</title>
</head>
<body>
<div id="area" name="area_name">xxx</div>
<script type="text/javascript">
var divs = document.getElementsByTagName('div');
var msg = '';
msg = 'Divs[0] contains ' + divs[0] + ' with width = ' + divs[0].width + "
";
msg +='Test area width by id = ' + document.getElementById('area').width + "
";
msg +='Test area width by name = ' + document.getElementsByName('area_name').width;
alert(msg);
</script>
</body>
</html>
</code>
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Feb 20, 2009
I am working on a very simple code to determine the highest value from an array and also use parallel arrays.
The problem I am having is, when I try to invoke the parallel array namesArray it returns undefined.
I have coded the function so it can be used to find the highest value in more arrays as this is only the beginning of my code. Im not sure if this is what is causing the problems but I have a feeling it is code...
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Sep 26, 2009
Here is a clip of code from a script project im working on. Now my document.getElementsByTagName is returning a "undefined" value.
<a href="[URL]" style="text-decoration: none; color: #EDDBAF; font-size: 16px;">
<center style="margin-left: 10px; margin-right: 10px;">
<font style="color: #EDDBAF; font-size: 16px;" id="title"></font>
</center></a>
<li id="name"><a http="[URL]" style="color: blue;">John Doe</a></li>
<script type="text/javascript">
var pname = document.getElementById('name').getElementsByTagName('a');
Now if I remove the ".getElementsByTagName('a')" it will actually work, but it also includes the <a> tag thats within the <li> tag, which I don't want.
document.getElementById('title').innerHTML=pname.innerHTML;
</script>
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Apr 5, 2011
I have a following snippet
var test = xmlhttp.responsetext
var msg="";
when i print the text as below
[Code].....
I could see the individual values in each index in firefox, but ie is displaying as undefined.
know whether this is not allowed in IE?. Is there any workaround for this?.
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Jan 25, 2011
I have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function.callback should be a string so why is it saying otherwise?
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Oct 20, 2010
I have a function where in I call another function that assigns a value to a var. code...
For some reason my code below is returning 'undefined'. But when I place an alert(); before the 'return' it shows the correct value. However when I place an alert(); to show the var that is set to what the function returns it says 'undefined'.
Firebug throws no errors. I am using a little bit of jQuery.
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Sep 12, 2011
I can not for the life of me get an ajax example/tutorial to work. I have tried dozens including prototype library and JQuery.
Here is my latest attempt:
As you can see I am trying to alert the variable teamH but I keep getting an undefined in the alert. I also tried a static drop down and I received the same undefined alert.
How I get that variable to contain my drop down choice?
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Aug 5, 2009
I have a very simple PHP script that returns JSON like this:
{"question":"What day is it?"}
And I'm trying to call it from another page using Ajax. My code looks like this:
var url = "/test.php";
$.get(url,
function(data){
$.each(data, function(i, value) {
alert(value);
}, "json"
);
});
When I run it I get each character printed out one at a time in a separate alert. And then when I used this line of code:
alert(typeof data);
It tells me that 'data' is a string. Shouldn't it be a JSON object?
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Feb 15, 2009
I have the following piece of code in use on a vBulletin forum:
function sel(postid,username)
{
if (document.getSelection) {
var str = document.getSelection();
[Code].....
What this does is if the user highlights some text in a post and presses a button, it inserts the highlighted text into QUOTE tags within the Quick prely box.
This works fine...however, it doesn't check if the user has actually selected some text. Many users simply press the button thinking it will quote the entire post, when in fact it will simply insert some "blank" quote tags.
What would I need to add into this to check that some text has been selected, and return an alert if not?
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Jan 15, 2010
i want to know is there any inbuild function to add spaces in javascript after particular interval..!!? there is string '00009999' i want to add blank space 0000 9999 after every 4 digits.?
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Mar 7, 2011
I am pretty new to Javascript having a bit of a problem with a website with Google Maps integrated. URL I have two checkboxes (ccCheck and caccCheck). The basis is when the box is ticked, it overlays a KML onto the map. This is working fine in Chrome, but in FF and IE it doesn't work, IE returns 'ccCheck is Undefined'. The code I am using is in the JS file, the bit it gets stuck at is as follows:
[Code]...
If I stick a ccCheck = document.getElementById('ccCheck') within the onclick function (before the if statement), it places the overlay onto the map, but then when I untick the box it just stays there. It's such a simple thing (I think), and must be down to IE being pedantic about declaring the variable properly, the question is how should I be doing this?
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May 5, 2010
I am running the scripts below which should return a string containing a URL.So far, it cannot find the form contents in Firefox, but displays the non-dynamic data such as ?Location=. It won't work at all in IE.
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May 26, 2011
I need to be able to match a particular element in a "row" of a multidimensional array, and then find and reference the other elements in that "row".
Below is a sample of the whole array...
Code:
var commercialProductList=new Array(
new Array("Sydney Automobiles - Online","Sydney_Automobiles_Online","users",60.39,3.02,1.21),
new Array("Sydney Automobiles - Hard
[Code]....
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Mar 27, 2011
When I run the following code, the .Length function returns "undefined."
var strTest = 'test';
alert(strTest.Length);
Using the typeof function, I know that JS is treating the variable as a string.
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Nov 16, 2011
What happens is that when I click on a button, a random string from the RandomString variable appears below the button. e.g I click on the button and it displays 'AAB' and then if I click on the button again it may display 'AAE' and etc.
The problem is that sometimes it displays 'undefined'. I don't wanit 'undefined' to appear but why does it sometimes display 'undefined' rather than a Random string.
Below is the code:
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Jun 16, 2011
I'm building my portfolio website. I'm an illustrator and graphic designer (for printing). My website uses html and css. I introduce a jquery plugin to create a slide show with my work. Until then, everything was working well. The problem appears when I introduce php to my code in order not to repeat the navigation bar all the time. With php and the jquery together I get a blank page in my browser.
This link shows the blank page I'm getting using php and jquery together. [URL]
This is an example of the site without the jquery. [URL]
Could someone please help me with this thanks.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
[Code].....
Those <li> tags Im using is to numbered the images. It might not be a good practice but it works.
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Aug 20, 2010
[code]...
The alert is blank. test.php definitely returns something.
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Aug 26, 2011
I'm working on this site [URL] and suddenly there is a blank space to the right of the site. As far as CSS is concerned it is not there. I am posting here because I was experimenting with jQuery at the time (I know almost nothing about it). However, I have removed all the jquery code from my files and it has made no difference. IE is giving me a 'console' undefined error.
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Aug 4, 2011
This error in firebug: jQuery.event.special.orientationchange.orientation is not a function. Page just loads as blank screen? Only when trying to upgrade to higher than 1.0a4.1.min.js. If I revert to earlier version then all is fine?
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Feb 15, 2010
var checkStock = function(){
As you can see it retrieves data with json so it makes an invoice. If the items that er in stock are smaller then the items that are ordered the paga can not be send. This part works BUT if everthing is ok and we get to our submit, it submits but goes to a white/blank page ?
I tried everything i could think of, no luck, even in the IRC no luck.
Live example: [url]
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May 28, 2010
I have a long form in a tabbed interface, where I want to count the non blank fields on each tab (the form fields are text and checkbox inputs and multi & single select fields). The counting function is as follows:
// Input argument is a tab object
function
countFieldsOnTab(obj){
var counttext = obj.find('input:text[value!=""]').length;
[Code].....
The counts of text, checkbox and multi-select fields works, but the single select count doesn't return what I want. The default option in single selects is a default where the value is blank "<option value="">-- make a selection -- </option>. These will be found as selected options.
How do I count only those options have have a non-blank selection?
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Oct 26, 2010
I'm trying to set up a form that has a text field that is required to be blank - I'm dealing with form spam, and the bots are stuffing every text field with random crap. So, I have a text box that is required to be blank. But I can't get jquery.validate to understand both required and blank.the text input is has a name and id of live_check.I have added this method:
$.validator.addMethod("equalToParam", function(value, element, param) {return value == param;});
and then my rules look like this:
rules: {
first_name: "required",
last_name: "required",[code]...
But validate flags the empty text box as invalid (because it's required?)
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Feb 28, 2011
I have a scenario where I have the following jquery
Code:
$("#frompdc<?php echo $JavaCnt;?>").change(function(){
var id = $('#id<?php echo $JavaCnt;?>').attr('value');
var frompdc = $('#frompdc<?php echo $JavaCnt;?>').attr('value');
var topdc = $('#topdc<?php echo $JavaCnt;?>').attr('value');
$.ajax({
type: "POST",
url: "AJ_Update.php",
data: "firm=y&id="+ id + "&frompdc=" + frompdc&topdc=" + topdc
});
And some php to insert this data
Code:
mysql_query("UPDATE TBLTRANSFERS SET FROMPDC = ".$_POST['frompdc'].", MOD_TS = '". $timenow ."' WHERE ID = ".$_POST['id']);
I'm trying to throw some validation in here which I can do in php (a language that I'm much more proficient in) but can't figure out how to get the two together. I want to be able to do a select against another table I have for both the frompdc and the topdc.
Code:
$tofpdcresult = mysql_query("SELECT * FROM tbltransferspdcexclusions where FROMPDC = '".$frompdc."' AND TOPDC = '".$topdc."'");
$tofpdcnum_rows = mysql_num_rows($tofpdcresult);
And if it exists I want to give a popup message to the user as well as blank out the field.
I'm struggling with two things:
How do I get ajax to run two queries and return the results to a popup window?
How do I blank out the field in the form?
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Dec 25, 2010
I want to know if there is a way to return ajax call as html value and not plain text, ie all html formatting will be displayed.
My code:
<script src="jquery.js">
<script>
$(function()
{
[Code]....
String returned from webform4.aspx is html formatted but jquery displayed it as plain text. Is that anyway to display it as html string ?
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