Maintaining State Between Function Calls
Jul 23, 2005
I would like to add dynamic text sizing to a website. There will be three text sizes. When the default is used, only the "Increase text size" button is shown. When the maximum size is used, only the "Decrease text size" button is shown. And otherwise, both buttons are shown.
I've been working on a mockup as follows at the end, but my issue is that once I have manipulated an element of the HTML DOM, if I access it again to check it's value, I will only get the original value in the document. To do the dynamic buttons, I need to maintain some kind of state between function calls, so that I know what the current size is. Can I even do this with Javascript or am I barking up the wrong tree?
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Apr 26, 2009
jQuery resource I'm using a accordian menu I found here:[URL]...I'm using it on a development site here:[URL]... It's being used on the left hand side navigation which are coloured Red, Orange and Green.
The menu is supposed to maintain state when you click through to the various sections, however it appears to jump between the Red, Orange and Green sections.
I've cheked that the cookie is set and using the unique identifier but it's still not working.
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Apr 1, 2010
I'm using jQuery 1.4 to hide a div (#cartPop) when the "close" link inside of it (#cartPop a) is clicked. Since I'm using animate() to fade the div out (opacity), I also have to use hide() to get rid of the div once it has faded out (otherwise the invisible div, which is on a higher z-index, blocks the elements on a lower z-index).
Code:
The problem is that the hide() function calls immediately without waiting for the animate() function to run. Even if I append a delay() function before hide() like so:
Code:
...it still doesn't wait.
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Jun 25, 2009
The javascript function addRowToTable() is called by a button, and replies a set of elements (select, input, checkbox) of the form. In this function, the creation of select calls another function CliK(sel.id)The problem is that this function tells me error "object required" as if the select Id was not "type" or the checkbox id was not "key" here I go wrong?
function addRowToTable()
{
var tbl = document.getElementById('tblSample');
[code]....
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Nov 24, 2005
I need to figure out the id of the element that calls a particular function.
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Oct 10, 2009
I want to have a button in a form that only calls a Javascript function, but not refresh the page, how do I do this?
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Oct 17, 2010
I have a search function which works when I only want to have only one search per page, but as it involves a string call I'm not sure how to modify it to multiple search requests on a page.
The below works fine for one call:
<script type="text/javascript">
function showHint(str){
if (str.length==0){
[code]...
The above doesn't work and I am not sure what do about the showHint(str) as clearly I am not representing it properly in my attempt to modify the script.
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Mar 7, 2006
I am creating a JavaScript object which I want to use to respond to user input on a web page. The object will basically be made up of a constructor and then a selection of functions which will use the DOM to alter the appearance of the page according to the user's input. I am getting stuck because I want a form element that is being created by the object to have an 'onkeyup' event attached to it which will call another function from the same object.
Now, I understand how to attach the 'onkeyup' event to the input element I have created using the DOM. If I tell the event to call a normal function (alert() etc) then it does exactly that. What I am having trouble with is getting the event to call another function from the object that created the input box in the first place. (I don't even know if this is possible / a wise thing to do!). Code:
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Aug 16, 2011
Two calls, one from a form and one from the html body reach the same 'window.open' function but only the former works.
The idea behind the simplified script of my post is to select to open one of two windows (files) by pressing one of two buttons. Each button passes a different parameter to the 'open/focus' window function. This function has an argument(arg) place holder to determine which window(file) to open(or focus) when a button is pushed and a corresponding string(argument) is passed. The window function is simply a double function,repeating the same if-else statements. That is, with the function(arg): "if(if-else) else(if-else)", the argument passed to 'arg' will determine if[to] {open else focus file1(button1)} else[to] {open else focus file2(button2)} in a new window.
Using a PC with either Explorer or Firefox, both the form button and the button coded in the html body opened a new window, but only the form button could bring the window forward(via 'object.focus') if it was already open. Using a Mac with Firefox, the form button worked well either to open or to bring forward an existing window, but the the button coded in the html body did nothing. Two 'alert' are place in the window function to show that the html button's call is reaching the window function. My question is that if this call from the html button passes through the same statements as that of the form button, why does it fail? (The script is in Perl, but it can be viewed as html in the source page.)
PHP Code:
#!/usr/bin/perl -w
use CGI qw(:standard);use CGI::Carp qw(fatalsToBrowser);use strict;
my $query = new CGI;
my $JSCRIPT=<<EOF;
[Code]....
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Jun 14, 2010
I am currently trying to make an html link that will add elements (specifically, drop down menus) to the current page when you click it. Since I am adding all the elements to the page using JavaScript, I'm not sure how to set up the link to call a function rather than go to a different page. I've seen people set the href attribute to the function they want, so I tried that and it didn't work. I've also seen a way that involves using onclick and making the link follow the onclick, not go to a different page.
In summary, how do you create/edit a link (from javascript) to make it use a javascript function rather than go to a different page? This is what I have currently (that concerns the link):
var link = document.createElement('a');
eval("link.setAttribute('href', 'javascript:addHours(" + dayDiv + ")');");
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Dec 8, 2009
I have some javascript the works in conjunction with a flash video player. When a user selects a video in the Flash video list and new video is called and begins to play. Also, when that video is selected a function called "doOnMediaLoad()" is called and inside of that function I have put a call to another function that I wrote in the same script.function that is called when user selects flash player video list.
function doOnMediaLoad(e) {
vcomments_changed(e.id); //call to my function
}
[code]....
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Dec 9, 2009
I have some javascript the works in conjunction with a flash video player. When a user selects a video in the Flash video list and new video is called and begins to play. Also, when that video is selected a function called "doOnMediaLoad()" is called and inside of that function I have put a call to another function that I wrote in the same script.
[Code]...
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Sep 22, 2010
I am trying to call a dynamically chosen function on success from an ajax call (later to be error and so on also)The following function works fine and passes the url to call and parameters into the makeAjaxPostCall function. successHandler is the function to call on ajax success.[code]
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Jan 3, 2010
I'm trying to in make in a single function, multiple calls to the same file changing one parameter the problem is thatit is taking it like if I wasn't changing the parameter and is sending only the last value all the times.Here is my code:
$(function(){
$('#btn_search').click(function(){
// what to search for
[code]....
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Dec 11, 2007
i have 4 images that expand onMouseOver and shrink onMouseOut
<script src = 'js/size.js'>
<div id = 'img1' onMouseOver = "expand(this.id)" onMouseOut = "shrink(this.id)">
<img src = ...>
</div>
<div id = 'img2' onMouseOver = "expand(this.id)" onMouseOut = "shrink(this.id)">
<img src = ...>
</div>
etc...
question: when i quickly move the mouse from one image to the other shouldn't i see one expand and one shrink simultaneously? i am currently seeing one shrink, then the other expand after. on occasion the shrink is skipped and the next image is expanded right away.
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Feb 26, 2009
I need to have a select menu reset to its default option (the one with a value of "0") when a user types in a text field. Check out the code...the html:
<INPUT type="text" name="search_vuln" value="" size="30" onkeydown="clear()">
the java script:
<script type="text/javascript">
function clear(){[code]....
I've also tried it this way...
<script type="text/javascript">
function clear(){[code]....
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Feb 20, 2009
I have below code to create two ajax requests. When ajax requests fetched, they alert the related request number.
Code JavaScript:
function ajaxIt(url,num){
var req = new XMLHttpRequest();[code]....
why removing var phrase overwrites requestNum value for two different asynchronous functions? How can I make sure variables are not overwritten by different function calls?
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Sep 28, 2010
Is there any way with Firebug, or any other tool, to easily find which functions are being called by which page on load?I need to optimize a huge pile of JavaScript files for a large website.
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Nov 21, 2011
There is a line in a jquery plugin that I am using that calls a function to run on the inputs of form "autoSubmit."
Code:
$(function(){
$('#autoSubmit INPUT').autoSubmit();
});
My problem lies in that I have multiple of these forms on a single page, each one named autoSubmit. I easily rename each with PHP to autoSubmitXXX or YYY depending on their record id numbers, but then the .autoSubmit(); function doesn't know which form to work with.
Code:
'#autoSubmit INPUT'
I can grab the individual form ID (XXX or YYY) with:
Code:
var where_val = form.find('#where').val();
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Nov 10, 2010
I have the following javascript function:
[ function addNewWindowEvent(evType, fn)
{
if (window.addEventListener)
[code]....
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Jul 23, 2005
I am getting syntax errors in my JavaScript code, code snippet as follows
(between my <script></script> tags:
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Jun 25, 2010
I'm currently rewriting all my ajax calls to use the jquery method (much cleaner code! ) and have declared a default ajaxError function, shown below:
$(document).ajaxError(function(event, request, settings){
alert("There was an error while communicating with the server. URL: " + settings.url);
});
However, now I have a few ajax calls where I want to declare an error function in the ajax call. I was hoping that by declaring an error function in the ajax call, it would replace the default error call I have defined. But that does not appear to be the case, as I continue to first get my ajax function error call, then I also see the above code execute.
I tried calling event.stopImmediatePropagation() from within my ajax error function hoping that it would stop further events firing (ie: the default error event) but that didn't do anything except tell me in firefox that "event" was undefined.
I was hoping I wouldn't have to go through and define an error function to EVERY ajax call.
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Nov 1, 2011
I used the code from the following article...[URL]
$(function() {
$('img[data-hover]').hover(function() {
$(this).attr('tmp', $(this).attr('src')).attr('src', $(this).attr('data-hover')).attr('data-hover',
[code]...
why does the rolled over image's src return to the original value when the user rolls back off it?
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Jul 21, 2011
To say I'm new to JavaScript is a bit of an understatement so bear with me. I have a site set up with a variety of layers of toggles. When you enter the site all of the items are collapsed and you click the headings to expand. Each of the toggle-able items have ids. It works great for users who start at the homepage.
However, when I send people to any of the inner topics, all they see is the initial collapsed state of the site. I want to be able to provide a URL that will set the toggle to open, and show all of the content for that section on entry.
Here is my code and js, can anyone point me in the right direction?
[Code]....
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Jun 1, 2010
How can I preserve the session state of a SharePoint browser state using javascript?
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Jan 24, 2006
i have an html page that when it loads theres an onLoad event called which calls a function.now what i want to do is be able to click a link that refreshes the page but at the time on the refresh it skips the onLoad event. is this possible?
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