JS Declaring-Wrong Validation Due To Function With Variable Holding Same Valu?
May 21, 2011
I am doing a Validation for Form "Text input". If the user leaves the input empty, a function is starting to run. If the field is bigger than 1 - so it doesn't get into the function.
The problem is: The first time, the user left the input empty, function ran, and I got the alert - that's OK. Second time, The user added 10 in the AGE input - And again he gets the Alert - But he should not.
Note: Age input value, returns from a different function (calc) to a var called: result.
[Code]...
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Dec 30, 2010
I am modifying an gallery script called slideSwitch. I want to set the interval value by a variable. For example, If I click button 1 the interval value is 5000 and If I click button 2 - the interval value is 2000 etc. Do I need to pass the value somehow? I My code so far:
Code:
function log(x) {
return x;
[code]....
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Nov 24, 2010
I seem to be having trouble with my string variable in innerHTML.. here's my code:
function header() { // Navigation Bar
110 var o = document.getElementById("header");
111 var s = '<h3 style="float:left;">'
[code].....
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Feb 19, 2009
I am writing a Javascript to sort and write out some stuff. PHP is not an option so I need to get this script working.
The problem arises when I want to make a link to the next page. (i.e. Like the link in google for the next 10 results)
I have <a href=# onclick=FUNCTION(VALUES)> written dynamically by the script.
It is written onto the document correctly, but the problem is, when the link is clicked, some seemingly random values are passed to the function.
I also have an invalid character error that arises when I pass the "whereVARquoted" variable into my function (code 2) which disappears when the variable is removed (code 1).
My code is below:
Code 1:
<script>
Code 2:
<script>
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Oct 12, 2010
Demonstration code:
The 'array' variable contains strings representing the id's of different elements. If the for loop above were to finish iterating, would all the links in all three elements call the click function (that displays an alert message), or would only the last element ("element3") have the click function? For me, the latter seems to be the case unless if I'm doing something wrong, but I would like clarifications and, if possible, alternative solutions as to how I can achieve the former result.
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Aug 21, 2010
I worked on a simple image slide-show with javascript, and I assigned a value to a var outside of a function using getElementById() like this:
Code:
window.onload = initLinks;
myImg = new Array("images/img01.jpg","images/img02.jpg","images/img03.jpg","images/img04.jpg");
curPic = 0;[code]..........
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Jul 30, 2010
is there any real difference between these two function declarations?
function DoSomething(parm) {
//do something here
}[code]...........
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Jan 26, 2011
I made a shortened version of code:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js" type="text/javascript"></script>
<script src="http://www.ylakiudarzelis.lt/js/jquery.validate.js" type="text/javascript">
[code]....
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Jul 17, 2007
function agregar_row(){
for (i=0; i<10; i++){
row="row/" . i;
if (document.getElementById(row).style.display=='none'){
document.getElementById(row).style.display=''
i=11;
} }}
This function is intended to make visible a row, just one by each time the function is called. the way im invoking "(row)" is wrong, i think...
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Mar 22, 2006
Try to add some blank text field and refresh window in IE it is ok but in firefox input hide_show works wrong , why ? Code:
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Feb 18, 2009
Why is my function returning the wrong value??
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Jan 9, 2006
I am relatively new to js, but I did think I was starting to get the
hang of it. Then this happened...
I have a form with an onsubmit event handler:
<form id="uploadForm" method="post" action="..."
onSubmit="checkDates()">
The event handler does some minor validation, then returns true or
false:
function checkDates(y, m, d) {
if (endDate.getTime() >= startDate.getTime())
return true;
alert("Start date must precede end date");
return false;
}
(The arguments to the function are used when it is called elsewhere,
not as onsubmit.)
I also have a library class which needs to process the form submit, so
it hooks onsubmit like this:
MyClass.setOnSubmit = function(listId) {
var list = document.getElementById(listId);
var form = list.form;
var f = form.onsubmit;
if (typeof f == "function") {
form.oldOnSubmit = f;
form.onsubmit = function(){
var ok = this.oldOnSubmit();
if (ok)
return MyClass.onsubmit(listId);
else
return false;
};
}
else
form.onsubmit = function(){MyClass.onsubmit(listId);};
}
My problem is that the value returned from oldOnSubmit and stored in ok
appears as 'void'. This happens in IE 6 and in FireFox 1.07. Can anyone
explain what's happening?
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Jul 20, 2005
I have tried to write a wait function but it seems like it will not brake the while loop. I tried two different solutions. Can anyone tell me what I am doing wrong, and come with another suggestion? If I call the function like this: wait(500); it should wait 500ms right?
function wait(time) {
while(1){
setTimeout("break;",time);
}
}
function wait(time) {
var flag=0;
while(flag=0){
setTimeout("flag=1;",time);
}
}
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Aug 30, 2011
I'm working on dynamic list with jQuery. I've appended hundreds of <li> elements with for loop to make very long list. When user scroll down again, remove older ones and append new ones at last of the list. I used$('li:lt(50)').remove() to remove first 5 elements from the list. At first, it works. But, for the second time, it always delete half of '50'. When I enter 100, only 50 elements deleted. How can it be? Could you check the ':lt(n)' selector and remove function? My HTML is very simple. only <UL> <LI> tags in the body. Tested on latest Chrome(ver.13.0.782), jQuery 1.6.2.
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Feb 21, 2009
I am writing a Javascript to sort and write out some stuff. PHP is not an option so I need to get this script working.
The problem arises when I want to make a link to the next page. (i.e. Like the link in Google for the next 10 results)
I have <a href=# onclick=FUNCTION(VALUES)> written dynamically by the script.
It is written onto the document correctly, but the problem is, when the link is clicked, some seemingly random values are passed to the function.
When you run the code, the first alert will show all the values that a were passed to the function. The second and third will show what was written to the document.
If you try clicking the next button after the code loads, the values that result will be unusual.
<script>
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Feb 24, 2011
The following code works fine in FF and Chrome for getting a radio selections value but not IE8.
$('input[name="search[gender]"]').change(function()
{
var check = $('input[name="search[gender]"]:checked').val();
Inputs are below:
<input type="radio" name="search[gender]" value="1" class="v_middle" />Male
<input type="radio" name="search[gender]" value="2" class="v_middle" />Female
<input type="radio" name="search[gender]" value="3" class="v_middle" />Couple
<input type="radio" name="search[gender]" value="4" class="v_middle" />tv
<input type="radio" name="search[gender]" value="" checked="checked" class="v_middle" />All
The first time you click a radio button in IE8, no value is returned at all (tested with document.write of the 'check' value), with an error "'null' is null or not an object". The second (and rest of the times) you click any of the checkboxes the wrong value is returned, it returns the value of the currently checked button (which we checked a moment ago) rather than the one we have checked the second time. Does Internet Explorer have issues with this onchange function method? Or is something wrong with my code?
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Feb 4, 2011
I'm currently trying to hide my navigation button when it hides the end of the list, right now I currently have:
Previous / Next (they are about the same anyways)
function previousEvent(i) {
var k = new Number(i);
[code].....
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Mar 27, 2010
(the "code" below is pseudo code, just to get the idea across)
Here's what I currently have:
var bill = new array[20];
var sam = new array[20];
var nancy = new array[20];
var Oscar = new array[20];
I'm assigning objects to them (ie Oscar[5] = new objLabel() This seems like a kluge, however. Here's what I'd like (again, pseudo-code)
var Objects = {bill:null; sam:null; nancy:null; Oscar:null};
var theObject = new Array of Objects[20];
// yes: i know that's wrong... and that's the part I'm having trouble with
so that I can do something like:
[Code]....
Just seems to me that keeping a single array of multiple objects is likely to be less error-prone than multiple arrays of single objects... But I don't have the syntax right... or can it be done in JS? If it's doable, would someone be kind enough to show me how to declare and access that example?
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Jun 10, 2010
I have a php script which calls a javascript function with a parameter. I am having trouble getting this parameter act as an array inside the javascript function:
php:
Code:
<? $array1 = '"apple","orange","banana"';
$array2 = '"corn","bean","beet"';
$arrays = $array1.'///'.$array2;
[Code]..
JS sees fruits and vegs as a string rather then an array, so if I try to output fruits[0]; it gives me the entire string rather then seeing it as an array and giving me the first element.
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Apr 28, 2006
Is there a way to create a DOM document object to hold the contents of
an external html?
I have two pages:
content.html contains some content.
index.html would like to access the contents of a particular <div> with
an id of "important" within content.html.
how would I do this? I know I can hack around and load the
content.html in an iframe embedded in index.html. Then, I can make the
iframe not visible....
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Jul 20, 2005
I'm working on a small javascript application where I'd like to get one
behavior when a user clicks on an image (image swap), but when they
simply hold down the mouse button for a second, they get another
behavior (drop down menu).
The former seems pretty easy -- just assign the handler for the onClick
event to the swapping function. The latter, however, seems more
involved.... I know I'd assign the onMouseDown handler to a different
function, and then.... after a 1 second or so I'd want to test whether
or not the mouse buttom was still being held down. Except that I have no
idea how to do that (both the waiting part and the actual test itself).
The idea that does occur to me is to have some kind of data structure
associated with the clickable image. I could have functions associated
with the onMouseUp and onMouseDown handlers to set a flag.... as soon as
onMouseDown is called, it sets the flag to 0, then it waits 1 second,
and checks to see if the flag is 0. If onMouseUp has been called, it
will have set the flag to 1, and we call the plain old click handler. If
the flag is still 0, then I know to do the popup/drowpdown menu.
I'm a little worried about the timing between the different flows of
control, though, and I'm also wondering if there's not simply a better
way to do it.
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Apr 13, 2010
I have routine that rolls through the images in an array every iInternalCount seconds, shown below. It first fades out the current image, does the calculation for the next image, assigns the next image to the src attribute of the image slot and then fades in the new image. But after starting the fadeOut of the current image the code continues immediately to the image switch line, so we see a switch to the new image and then the new image fade out. I need a way, probably using the callback function of the fadeOut() method, to keep control from continuing to the image switch line until the current image had finished fading out.
[Code]...
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Aug 28, 2009
What I want to do is declare an empty array. so i do it like this:
var changedValues = {};
Now i m populating this array dynamically with values, something like this
changedValues[elemName] = elemValue;
This also works fine. BUT, when i do a alert(changedValues.length)....
it gives "UNDEFINED" even though the array is not empty. Saw it through firebug .. Can anyone tell me wht is happening here?
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Sep 8, 2011
I have a understanding problem with this:
var loadData = function(){
$.post('/search.php', { myvar: 12345 }, function(data){
$.each(data, function(key, val) {
// here I have to validate my data I retrieved
if(first condition){
return false;
[Code]...
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Aug 3, 2011
I have an img#info that I want to fade in when a div#trigger is hovered over. Then I want to be able to move the mouse over to the image and click a hot spot there, without the image disappearing because I moved off of div#trigger.
The code to fade in img#info is simply:
$(document).ready(function() {
$('img#info').css('opacity', 0);
$("div#trigger").hover(
function() {$("img#info").animate({'opacity': 1}, 1000);},
function() {$("img#info").animate({'opacity': 0}, 1000);}
);
});
This works fine as far as fading the image in and out. I tried then adding a hover statement for the img itself, below, but this doesn't work at all. The image is now always on, even though the alerts never fire when I roll on and off the image:
$(document).ready(function() {
$('img#info').css('opacity', 0);
$("div#trigger").hover(
function() {$("img#info").animate({'opacity': 1}, 1000);},
[Code]....
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Jul 26, 2010
I have done one project in javascript so far and have had no schooling on the topic, however I have learned quite a lot in the last few months from this thing called the 'internet'. So far I managed to make an html image map that has various tooltips which will appear onmouseover, and the tooltip disappears onmouseout. Each point of coords that i have defined has a hyperlink to a different page on the internet. It works just like i wanted it to and i couldn't be happier, that is, when i'm using a mouse...
When i am using a touchscreen device it is a different story. specifically i'm trying to port my html page to android as i figured it would be easy with the android sdk and webview (it was, but read on). What i found when i used the 'app' on my phone was that onmouseover works when you touch the screen, however it also registers as a click, so pop goes the tooltip, and i'm whisked away to my webpage. not the desired result.
Ideally I would like to hold down the screen for 3 seconds and then the hyperlink would activate, but i decided that just getting the thing functional would suffice for the time beaing so i tried to include some 'ondblclick' that would trigger a document.location. This worked fine on a web browser again, but had no result on the touchscreen. I decided to abandon this half step because I have read that ondblclick doesn't work in an image map and it isn't my intended result anyway.
I have found a lot of javascript and jquery samples that emulate the onHold event that i'm trying to achieve, both on this forum and all over the internet, however these samples are overly complex and are focused on looping an action, such as incrementally increasing a value or zooming or whatever. I just want to redirect the user to another page if they trigger 'onmousedown' for 3 seconds.
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