JQuery :: SetData/getData Events Should Be Capable Of Overriding $.data()'s?
Nov 4, 2010
Check out the official blog post on the 1.4.3 release:[URL]..I am thoroughly confused by this sentence (under "Events"): "jQuery has already had setData and getData events (which are broadcast whenever data is set or gotten through the .data() method) overriding these methods makes it possible to override the default behavior for those features (namely you can return a different value or prevent a value from being set."
1. had setData and getData events overriding these methods" -- which methods? 2. "makes it possible to override the default behavior" I have looked into the source and I cannot think of any way to either "return a different value" or "prevent a value from being set."
now on the page demo.htm, the text will show on index.htm, or a picture (if I call it via img src), but if I have any javascript scripts it will show nothing--not even text. I know 'body' will give me the items/text in the body, but I assume body needs to be replaced with something else to get the srcipt to run. I just have no idea? Any options. I would like to keep the way the page is being calle dinto the frame, I just would like to add some functionality.
I am looking for a snippet to use touch gestures in jquerymobile. The following snippets works fine but the page only slides to the left. How to swipe the page to left and right? (data-direction=reverse"?
<script type="text/javascript"> $('div.ui-page').live("swipeleft", function(){ var nextpage = $(this).next('div[data-role="page"]'); // swipe using id of next page if exists if (nextpage.length > 0) { $.mobile.changePage(nextpage, 'slide'); }}); $('div.ui-page').live("swiperight", function(){ var prevpage = $(this).prev('div[data-role="page"]'); // swipe using id of next page if exists if (prevpage.length > 0) { $.mobile.changePage(prevpage, 'slide', true); }}); </script>
I have a JavaScript application which opens an ExtJS Window, containing an ExtJS TabPanel, which has a tab containing a Data Grid, showing approximately 900 - 1000 rows, each with 7 columns of text fields. The grid may also be filtered to show about 100 rows at a time. When the window opens, navigating to this tab can cause Firefox or Safari to spin/lock up for over 60 seconds...
This is Ext 2.2 I know it's very hard to say without code... but without seeing code, my question is: Should ExtJS be capable of displaying a grid of so much data? In trying to optimize should I be looking at my code, or is ExtJS itself the problem? Is anyone using ExtJs to display such large grids?
I just want to know,is it possible to load a div but the content loaded is based on what event triggered?
For example,when I mouseover a <tr>,it loads details of product inside a <div>.But when I click a 'View Image' link (which is placed inside the same <tr>),it will load the image inside the same <div>.
I was thinking to use if..else statement.But I don't know how to do it.
JQuery and have a problem with an expandable menu I have created for a new Wordpress theme.
With my expandable menu I am simply (slide)toggling the children <ul> by clicking the parent <li>. This should work fine but jQuery is overiding the default event for the anchors in the children resulting in me having a nice expandable menu that animates well but with its links disabled.
As far as I can tell this should work as I am targeting one level of anchor beneath the parent and not any other more deeply nested children.
The problem only applies to the followning browsers - Firefox 3.5, Safari 4, Chrome and ie 8.
It works fine in ie 6 and 7, Firefox 3 and Opera 9.
The jQuery is as follows:
The html structure is as follows:
I left the anchor details (href, title and so on) out just to make the html code a little easier to scan.
I'm redesigning a large website right now, and the problem i'm having is that there is already a CSS class called "required" that has been used extensively all over the site. However, I want to use the jQuery.validate.js for the forms. is there any way to override this?
I need to be able to capture the src attribute of an image as I drag it from an arbitrary IE browser window to my form. Trying for hours I could not get it to work.
Isolating the problem I think the reason is that the following statement fails:
I'm finally diving into regexp by porting a perl script over to js that uses regexp to compress javascript into a bookmarklet capable format.I've successfully worked out 90% of the expressions but am troubled with a few, this one at the moment is odd:I want to remove the first line if it hasjavascript:So I thought str.replace(/^javascripts+:s+/, "") would be ok. I want javascript text, any space, colon, any space and new line. what I'm doing wrong.btw this is the original perl version
I am trying to "ajaxify" my site. Now I have one problem:
$("#posts").children().remove(); $("#tag-sidebar").children().remove(); $.each(data.Tags_Sidebar, function (indexInArray, valueOfElement) { var insert = $("<li>");
[Code]......
Now when I click one of those links (href1, href2, href3) generated, the click event won't execute! What's the problem? Also, is it right that I have to transfer the valueOfElement over, like I did? What does stopEventPropagation do? Prevent the href from being navigated to? That's what I am trying to do.
How can i override all the styles being cascaded applied to some HTML element?
For example:
I have a stylesheet where DIV styles are described DIV { padding: 10; margin: 10; }
and have HTML code:
<DIV><DIV style="override:all">Test</DIV></DIV>
I would like to not have the inner DIV padding, margin and other directives described in styles above. Actually I would like to discover some directive line "override:all"!
I am using the "lightbox" effect to open my images which uses javascript. I am also using jQuery for the changing banner at the top of the page. Ever since I put the jQuery script in, the "lightbox" script stopped working. When I remove the jQuery script, the "lightbox" script works again. Obviously they are conflicting for some reason. I have included the relevant code below.
var parent_child = function(po, ps, co, cs){ var url = 'http://xyz.com/abc/'; var pars = [], childs = {}, tmp; this.p_added = function(urlFrag){
[Code]....
What i want to do is to create a new class with the above one as the super class, pass in one more variable to the constructor and override the p_added function. I thought of doing something like xpc = new parent_child(); and override the function with xpc.prototype.p_added = function(){}
how to pass in another variable to the constructor and make it private to the new class.
I believe there is a nice and concise way to achieve what i want to, but i can't find it. And the fact that OOP in javascript can be implemented in several different ways doesn't help my cause.
I'm trying to use javascript to control a table's td styles. What I want to achieve is to
- apply style A onmouseover - apply style B onmouseout - apply style A onfocus
The problem is that the mouseout event overrides the focus event. Also I'd like each element to stay on the focus state until another element gets clicked.
This is my code:
<script language="javascript" type="text/javascript"> function HoverStyle(element) { document.getElementById(element).style.backgroundImage = "url(images/arrow1.jpg)";
I have been developing a website in html and javascript for people to play the game Runescape (www.runescape.com) on.
It uses a textbox and array to open the page of the selected server into a frame, but they have recently added this little bit of javascript to the pages on which the game is embeded.
Does anyone know how to suppress the default messages?
1. "Are you sure you want to navigate away from this page?" 2. "Press OK to continue, or Cancel to stay on current page"
I need to provide the user a custome message. I tried many approachs, but non of them seem to work. I tried to use a confirm box instead, but for some reason, the return value for onBeforeUnload event seem to be used as string, so return false to the event CANNOT stop the page from refreshing.
I want to turn all text on a page black when the user clicks a print icon. (Along with that I also remove some DIV's so only the information someone would want to print is visible)
If I add * {color:#000000} to my CSS it does exactly what I want. Now I need to figure out how to apply this rule dynamicly to my document object or perhaps the body when a function is run.
In class based languages you can override methods in subclasses like so: class BaseClass{ methodA(){ print( name() ); }name(){ return "--base--class--"; }} class SubClass extends BaseClass{ name(){ return "--sub--class--"; }}
So the following code prints "--sub--class--" (new SubClass).methodA(); So even though methodA belonged to the BaseClass, it called the overridden version found in SubClass. Would the equivalent code in Javascript print "--sub--class--" or "--base--class--" ?
I have an editable div, when clicked displays two buttons - save and cancel. When either button is pressed the respective function takes place. The problem I'm having is with the onblur function. When a targetElement loses focus, I want to figure out which new element gained the focus - if it is the save button then I want the save function to fire. However, if it is any other element then I want the cancel function to fire.
I'm trying to figure out once an editable div is selected and the user clicks the save button, how do I determine that the save button was clicked and trigger the save function - because with the onblur method attached to the editable div any click outside the div is interpreted as a call to the onblur method, even if the save button is clicked.
I have a site with the main content displayed in an iFrame. The problem is the outside frame is not exactly rectangular so the iFrame corners go over the corners of frame. I solved this by having the pages in the iFrame transparent and this works fine. However, I wish to only have the iFrame displayed when it is fully loaded. I have pretty much worked this out but there is just one problem. I cannot work out how to set the iFrame to not display initially so I can then change it from Javascript. In other words, I have the following function that shows or hides the iFrame. I simply parse "none" or "block":
Code: function showHideFrame(display) { Frame = document.getElementById("frameContent"); Frame.style.display=(display); }
I then have this function that is called from Flash to change the page. Before the page is changed I hide the iFrame: Code: function changeFrame(page) { Frame = document.getElementById("frameContent"); showHideFrame("none") Frame.src = page; }
I then have the iFrame set up as follows: HTML Code: <iframe src = "[URl]" id="frameContent" allowtransparency="true" frameborder="0" onload="showHideFrame('block')></iframe>
The problem with this is that it starts visible. I have tried adding a HTML Code: style="display:none;" To the iFrame but then the javascript cannot set it to block it stays hidden the whole time. I have also tried putting it on the CSS but the effect was the same. So how can I override the CSS? Or set it to be invisible initially?
I have a series of images with an animation bound to mouseover and mouseleave events, and I'm trying to get my head around adding a click event that would prevent the mouseleave animation from occurring only for the image that was clicked, preserving everything else as is (until another image is clicked). I've discovered .stop() and I think I'm getting close, but some part of the logic is still escaping me.
Can anyone assist me with what I am trying to do with the following code (six different scenarios to try to make the functionality work correctly)?
I want to always (and ONLY) display in the status bar 'Symantec Corporation' whenever anyone mouses over (onMouseOver) my image or link OR when one clicks while holding the left mouse down (onClick) on the same image or link. Upon releasing the mouse (onMouseOut), the status bar should be 'blank'. I need the link to open in a new window via my function openWindow(URL) code.
What is happening in most of the six scenarios, is that when one clicks the link, either the function doesn't engage, but rather the <a href= takes effect instead OR that status bar shows 'javascript:openWindow('http://www.symantec.com/');' when one clicks while holding the left mouse down (onClick) on the image or link.
Additionally, for only the link, I need the CSS/style to show 'red' when one mouses over (onMouseOver) it and then change to 'blue' upon releasing the mouse (onMouseOut).
How about integrating 'style="cursor:hand"' into the code or perhaps setting some of the data via a <div> or <span> snippet? Code:
I've got 2 pages: a current events page and a past events page the current events page loads fine as there is only about 10 events the past events page takes about 30 seconds to load and will crash if u click your mouse in the loading time.
The pages are near identical the only difference is the query that selects the events (> versus <)
The page loads immediately without:
But when i put it back in the above happens. I'm using jQuery.roundedcorners.
I am using .ajax() to access cross-domain data using JSONP. Because I need to be able to cache the data I want to use a static name for thejsonpCallback function, so I have set the jsonpCallback option in the .ajax() request. However that appears to requires a global function whereas the auto generated function didn't (well maybe it did but that was all hidden from me).
I definitely need to be able to cache the results. Ideally I wouldn't have a global function handling the data. Is there another way to do this? If not what is the best practice way to go about using a global function these days and how do I provide it with the context of the object/module it was called from - which is where the data is needed?
Relatively new to jQuery but have a problem with getting data to display.Using a webform with 2 forms. User slects and inputs data into the first form, clicks a button then using jQuery .ajax submits the serialized data to a php script. The script processes the input into multiple paragraphs of text which is based on the input from the first form.The data is returned to the webpage and displayed in a text area (of the 2nd form) where the user can edit it to fine tune the wording. The 2 forms are displayed in different tabs so it is easy to move back and forward between the 2 forms.
The problem occurs when the user goes back to the first form and enters or selects different text and then click the submit button to generate a whole new text for insertion into the textarea on the second form. For certain fields the modified text is displayed.However if the whole of the text in the textarea is deleted, then the user clicks the submit button to re-generate the text content area then nothing at all is ever interted into the textarea. If have user alert to check that data is returned from the php handler and this text is correct. BUT when I click on the tab to see the textarea (id is "draftrec") there is no text inserted. The relevant function is below and the line that should insert the text into the textarea is:
I would like to use jQuery to prepopulate a form - ie make a call to a php program to get data from a database and pre-populatea form with appropriate data for the user. Can anyone point me in the right direction for some examples on the simplest way to do this?
