jquery-1.7

I was looking through new stuff added to jQuery 1.7 and I saw they now have jQuery.Callbacks() http://api.jquery.com/jQuery.Callbacks/ . The documentation shows you how to use jQuery.callbacks() but not any applicable examples of when I would want to use them. It seems you can add/remove callbacks from a callbacks list and you can do jQuery.callbacks().fire(args), but this just fires off ALL of the callbacks in that list. Maybe I am missing something but this doesn't seem very useful. In my head when I first saw this new functionality I thought you would be able to use it with key/value pairs.

Before I get flamed with references to manuals, I have been researching this for quite some time, and keep getting dead ends. Not even sure how to debug it properly. So if any references are cited, please ensure they are well-commented and instructional. This due to me being a PHP/mySQL developer, and the JavaScript object reference model is a bit confusing to me (but definitely doing my best to learn! :) ). I am trying to update my knowledge of jQuery using jQuery v1.7.2. Apparently the live event has been deprecated, and has been replaced by .on(). The jQuery docs say not to blend old 'click

Since version 1.7 live is deprecated. Following example is easy to make compatible with new on method: $('nav li, #sb-nav li, #help li').live('click', function () { // code... }); Using on : $('nav, #sb-nav, #help').on('click', 'li', function () { // code... }); How to rewrite following example using on ? $('#header .fixed-feedback-bn, #sb-sec .feedback-bn').live('click', function () { // code... }); $(document).on('click', '#header .fixed-feedback-bn, #sb-sec .feedback-bn', function () { // code... }); .live() is just binding document as listener. My two cents are that you can almost always

jQuery 1.7's .on() and .off() methods are supposed to replace .live() and such. I tried it with a dynamic item: $(".myList").on('click', function(e){ alert('hello world'); }); This is not working for me for elements added after DOM is loaded. Is code above a valid example for jQuery 1.7's .on() and .off() methods? See http://blog.jquery.com/2011/11/03/jquery-1-7-released/ for live() -> on/off() (and other) examples. This is their example for converting live to on: $('a').live('click', fn); $(document).on('click', 'a', fn); So your example becomes to: $(document).on('click', '.myList', function

Is there any way in jQuery to check if any parent, grand-parent, great-grand-parent has a class. I have a markup structure that has left me doing this sort of thing in the code: $(elem).parent().parent().parent().parent().hasClass('left') However, for code readability i'd like to avoid this sort of thing. Is there any way to say "any parent/grandparent/great-grand-parent has this class"? I am using jQuery 1.7.2. if ($elem.parents('.left').length) { } There are many ways to filter for element ancestors. if ($elem.closest('.parentClass').length /* > 0*/) {/*...*/} if ($elem.parents('.parentClass

I'm trying to do some conditional manipulation of elements that are dynamically added to some container on a page, but I'm missing an event. Say I have a container: <div id="container"></div> I can easily bind an event handler to the click function for all new elements, using $('#container').on('click', '.sub-element', function() { ... }); But what do I bind to in order to get a "one-time" hook when the element is added to #container . I have tried to bind to ready and load to no avail. Is there any way to do this, or do I have to come up with another solution to my problem? This fiddle

I have an old website with JQuery 1.7 which works correctly till two days ago. Suddenly some of my buttons do not work anymore and, after clicking on them, I get this warning in the console: Form submission canceled because the form is not connected The code behind the click is something like this: this.handleExcelExporter = function(href, cols) { var form = $('<form method="post"><input type="submit" /><input type="hidden" name="layout" /></form>').attr('action', href); $('input[name="layout"]', form).val(JSON.stringify(cols)); $('input[type="submit"]', form).click(); } It seems that Chrome