This routine used to work when I was using jQuery 1.3.2. Now that I've switched to 1.4.2 it fails. I've verified that returning to 1.3.2 fixes the problem.
I have a page which includes this select pulldown:
<select
name
="template"
id
[Code]....
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.
I'm doing something with grails + jquery. My controller send a rendered json (which I know is sending correctly) but when the object "arrives" in the callback method it comes undefined. I can see it lenght, but not it's content.
[Code]...
I have to use scrollTop and scrollHeight properties, but on jQuery object it returns `undefined`.
Is there any method to get this property from jq object?
It doesn't matter, but my object looks like this:
I am trying to make a function that will return part of some xml data, but It keeps returning "Undefined" here is the function, with the call:
Code:
function getUserInfo(u, t) {
$.ajax({
type: 'GET',
[code]....
I have a homework assignment which is pretty simple. It is a grade calculator that uses arrays to gather the grades from the user. This is what I have for the problematic section:
var homework = new Array(2);/* The grades entered by the user for Homework 1, 2, and 3 */
var project = new Array (3);/* The grades entered by the user for Project 1, 2, 3, and 4 */
[Code].....
My problem is the document.write portion of the code, where it is supposed to return either homework[0], project [0], or exam[0], it instead returns undefined. There is no problem with any other subscript. And yes, it does successfully prompt me for each of the [0] subscripts in the first part of the code. Am I just missing something that is right in front of my face? Does all arrays not start with the [0] subscript?
Suppose we have following javascript codes: Case 1.
var foo = function (){
var x = "hello";
var bar = function () {
alert(x);
} return bar;
} var bar_ref= foo();
document.write(bar_ref()); // it pops up "hello" and print-outs "undefined".
If we modified above code slightly, shown as follow: Case 2.
var foo = function (){
var x = "hello";
var bar = function () {
alert(x);
} return bar();
} var bar_ref= foo();
document.write(bar_ref()); // it only pops up "hello".
As you can see, Case 2 modified the return value from "return bar" to "return bar()," which won't cause the "undefined" output. To me, it looks like when the JS interpreter executes the line "bar_ref();" it triggers the execution of function "foo", besides both "return bar" and "return bar()" do the same job which is to execute function body of "bar".
The only difference is that after the execution of function bar, its function body does not exist anymore, so when the interpreter executes the line "return bar;" it follows the function identifier "bar" and ends up with "undefined". This is why the Case 1 gives us "undefined", but I am not quite clear about why the Case 2 can trace down to the function body of "bar". Do you have any ideas about such difference outputs?
Shouldn't history.previous return an url address of previously visited web site???
I used this code in my web page: <body onload="alert(history.previous+''+window.history.next)">
then I visited some web sites and went back, but the code always returns undefined, although there are URLs of the previous and next pages visited .
I am trying to access the width variable from my main page. Within the imageinfo.js script functions I can alert() the width value which returns 1024. But I can't seem to pass this variable to my main page or access it directly so that I can use document.write() to write the variable on the page. Whenever I try to call the 'width' variable directly from the main page I get undefined. How can I access this variable? However, with the test code below, I was able to get ducument.write() to write the 'width' variable on the page but now the page doesn't stop loading - there's an endless loop in the code...
Code:
BinaryAjax(url,function(http) {findEXIFinJPEG(http.binaryResponse);test(width)},null,useRange ? [0, Range] : null);
Main page
Code:
<html>
<head>
<script>
function test(width){
document.write('Image Width = ' + width)
} </script>
<script type="text/javascript" src="binaryajax.js"></script>
<script type="text/javascript" src="imageinfo.js"></script>
</head>
<body>
<script type="text/javascript">readFileData('image.jpg')</script>
</body>
</html>
Imageinfo script - This script uses the binaryajax script found below.
Code:
/*
* ImageInfo 0.1.2 - A JavaScript library for reading image metadata.
* Copyright (c) 2008 Jacob Seidelin
*/ .....
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.
Here is a code I use to calculate distance b//w 2 places using google api. It works perfectly and shows the results in the html but when I add a return statement at the end of the function showlocation() it returns undefined.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "[URL]">
<html xmlns="[URL]">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<meta name="robots" content="noindex,follow" />
<title>Calculate driving distance with Google Maps API</title>
<script src="[URL]" type="text/javascript"></script>
<!-- According to the Google Maps API Terms of Service you are required display a Google map when using the Google Maps API. see: [URL] -->
<script type="text/javascript">
var geocoder, location1,addr1,addr2, location2, result1,gDir;
function coolAl(add1,add2) {
addr1=add1;
addr2=add2;
var result= return initialize();
showLocation();
alert(result);
} function initialize() {
geocoder = new GClientGeocoder();
gDir = new GDirections();
GEvent.addListener(gDir, "load", function() {
var drivingDistanceMiles = gDir.getDistance().meters / 1609.344;
var drivingDistanceKilometers = gDir.getDistance().meters / 1000;
result1=location1.address + ' (' + location1.lat + ':' + location1.lon + ')/' + location2.address + ' (' + location2.lat + ':' + location2.lon + ')/' + drivingDistanceKilometers + ' kilometers';
document.body.innerHTML=result1;
return drivingDistanceKilometers;
});
} function showLocation() {
geocoder.getLocations(addr1, function (response) {
if (!response || response.Status.code != 200) {
alert("Sorry, we were unable to geocode the first address");
} else {
location1 = {lat: response.Placemark[0].Point.coordinates[1], lon: response.Placemark[0].Point.coordinates[0], address: response.Placemark[0].address};
geocoder.getLocations(addr2, function (response) {
if (!response || response.Status.code != 200) {
alert("Sorry, we were unable to geocode the second address");
} else {
location2 = {lat: response.Placemark[0].Point.coordinates[1], lon: response.Placemark[0].Point.coordinates[0], address: response.Placemark[0].address};
gDir.load('from: ' + location1.address + ' to: ' + location2.address);
}});}});}
</script></head>
<body onload="coolAl('pune','mumbai')">
</html>
I'm new to ajax. I've made a script that should return results from database but it keeps telling me just undefined. Code what I have:
Code:
var ajax = null;
function showRes(wut) {
if(wut.length == 0) {
document.getElementById("results").innerHTML = "";
return;
} if(window.XMLHttpRequest) {
// IE7+, ff, chrome, opera, safari
ajax = new XMLHttpRequest();
}else if(window.ActiveXObject) {
// retards
ajax = new ActiveXObject("Microsoft.XMLHTTP");
} else {
alert("Your "browser" does not support AJAX!");
return;
} var url = "search.php?q=" + wut;
url = url + "&sid=" + Math.random();
ajax.open("GET", url, true);
ajax.send(null);
document.getElementById("results").innerHTML = ajax.reponseText;
}
The code below works perfect in Firefox, not in IE8.
<script language="javascript" type="text/javascript">
HTML:
Since upgrading from 1.4.x to 1.6.1 all the code that selects the contents of an XML attribute by the name of 'value' has stopped working. Upon investigation, any time you do
$(someXMLObject).attr("value")
now always returns 'undefined'. This worked fine in previous versions and currently is preventing us from upgrading. I know the obvious solution would be to change the attribute name from 'value' to something else, but this would require some real effort on our part as a lot of our front end code is assuming an attribute of 'value' be passed in.
My question is, is this bug likely to be fixed in a forthcoming release of JQuery or should we implement the necessary workarounds on the assumption that this isn't being worked on?
Have searched this forum thoroughly as well as googled it, but no luck in understanding why the following simple code does not work:
Code:
function changeSelect(){
var id = $(this).attr("id");
[code].....
I have2 select boxes with 2 options. If I change the first box I want to reset the second box.
I have tried on Change, setting thesecondselect box val but this does not work.
Here is my code.
If i change box 2 and then change box 1 it never resets box2 to 0...
I am trying to make a form that collects "Number of Children" a parent has. If they select "4" from the select input, then I want to slidetoggle out the appropriate divs, one for each child.
[Code]...
I have been able to use slidetoggle in the past when attached to a button, but this one has me lost. Anyone know how to accomplish this?
i have listbox that when a user selects option(s) I want to see if the "--ALL--" option text is selected and then do something.. basically
for each selectedoption.text that contains "--ALL"
$('#lstBusinessUnitSource option[value*="' + $(this).val() + '"]').remove();
here is my code..
$(
"lstDivisionSource option:selected").each(function () {
alert($(
[code]....
There appears to be no difference between these two when the page loads.
<select id="one">
If there is no "selected" then it always defaults to first value.
How can I tell if the page has loaded and no options have been selected?
How can i check in a poll which radio button was selected?
View 2 Replies View RelatedI have an html drop down list. the list has an 'other' option. when the other option is selected I want a text box to pop up to the left of it for entry. I was thinking about using a hidden <div> to contain the text box. and when other is selected to unhide it. How do I unhide it when other is selected?
View 1 Replies View RelatedI’m trying to get the text() of a selected option that has been dynamically built.
I am using the following code in a doc ready fun:
Code javascript:
$('#content_category').change(function(){
var catselect = "";
$('#content_category option:selected').each(function(){
[Code]....
The second select (#content_sub_category) is populated dynamically (PHP) onChange of the #content_category select.
I can get the text() of the #content_category select but nothing for the #content_sub_category select!
I’ve tried to look into rebinding on Jquery’s FAQ page, but can not get it working.
I am making a usermanagementsystem and working with access levels. I been trying to make a script that when it does a post request and get data in return in json to choose default selected option in a select input. I been trying for two days now all different things. This is what I got that somewhat works. Any ideas how to make it select the right option?
[Code]...
I have a few selects like this:<select id
="theOptions1
" name
="theOptions1
">
<option>
[Code]....
I want to pass it to a function that will show me the selected element: $(function() { $('#theOptions' + 2)).filterOn('#theOptions' +1, { 'a': ['a'], '1': ['1'] });}); here is a part of the function:
[Code]....
[code]...
on the click of the input=Submit, if is selected "Insert New User",
how can I redirect the user to another page (.aspx, .ascx, .html, etc) where he can insert the new values?
I'm trying set an option with a certain value to selected. I'm using this: $('#mySelect option[value="' + myValue + '"]').attr('selected', 'selected'); This has worked in another piece of code I wrote, but now IE 6 and 8 are throwing an error (in the debug bar). It's something similar to this: "The selected attribute couldn't be set. Unknown error." Anyone ever experienced something similar?
View 6 Replies View Related