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2014/10/16 ¤W¤È 12:01:53
jquery Programming Glossary: althoughHow can I detect with JavaScript/jQuery if the user is currently active on the page? http://stackoverflow.com/questions/1009260/how-can-i-detect-with-javascript-jquery-if-the-user-is-currently-active-on-the-p exactly sure how to create this. I have jQuery available although I'm not sure how much of this will actually use jQuery. Edit..
Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail http://stackoverflow.com/questions/1014203/best-way-to-use-googles-hosted-jquery-but-fall-back-to-my-hosted-library-on-go ready event handlers should be in the body to avoid errors although it's not fool proof . One more reason to not use Google hosted..
What CSS3 selectors does jQuery really support, e.g. :nth-last-child()? http://stackoverflow.com/questions/11745274/what-css3-selectors-does-jquery-really-support-e-g-nth-last-child sense of the word but you get the picture . In your case although IE9 and IE8 implement document.querySelectorAll IE8 doesn't..
If a DOM Element is removed, are its listeners also removed from memory? http://stackoverflow.com/questions/12528049/if-a-dom-element-is-removed-are-its-listeners-also-removed-from-memory remove apparently had some memory leak issues itself although these issues were later attributed to be a Javascript problem..
http://stackoverflow.com/questions/1419731/jquery-framework-internals of the topics you have mentioned and I am familiar with it although not an expert and have not coded some of the advanced topics..
jQuery resize not working at FireFox, Chrome and Safari http://stackoverflow.com/questions/229010/jquery-resize-not-working-at-firefox-chrome-and-safari could consider using watch on the width height properties although I don't know whether this is fully browser compatible think..
What are the typical reasons Javascript developed on Firefox fails on IE? [closed] http://stackoverflow.com/questions/2599020/what-are-the-typical-reasons-javascript-developed-on-firefox-fails-on-ie not executed the pages show as if javascript wasn't there although some javascript is executed. I am using own libraries with dom..
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean the .fn object. It's just an extenstion of the jQuery core although the outcome is the same. This is if you want to add traversing..
http://stackoverflow.com/questions/3015335/jquery-html-vs-append here and here . innerHTML is generally the faster approach although don't let that govern what you do all the time. jQuery's approach..
navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't http://stackoverflow.com/questions/3397585/navigator-geolocation-getcurrentposition-sometimes-works-sometimes-doesnt Here at home I get a callback within a second or two although the accuracy is poor. At work however I experience quite bizarre..
“javascript:void(0);” vs “return false” vs “preventDefault()” http://stackoverflow.com/questions/3498492/javascriptvoid0-vs-return-false-vs-preventdefault property to make it keyboard accessible in most browsers although this isn't really properly standardised. You can also detect..
Jquery toggle event is messing with checkbox value http://stackoverflow.com/questions/355638/jquery-toggle-event-is-messing-with-checkbox-value the part that checked the attribute. This works perfectly although it's a bit hacky 'input#myInput' .change function if this .hasClass..
JavaScript: Invert color on all elements of a page http://stackoverflow.com/questions/4766201/javascript-invert-color-on-all-elements-of-a-page jQuery is acceptable and it only needs to work on Chrome although if it worked in Firefox that'd be a plus. This is excluding..
http://stackoverflow.com/questions/512257/jquery-modal-boxes-and-iframe a little effort I started hacking together something here although I stress that this was simply a POC and does not work as the..
Rails not reloading session on ajax post http://stackoverflow.com/questions/5126721/rails-not-reloading-session-on-ajax-post a very strange problem with Rails and ajax using jQuery although I don't think it's specific to jQuery . My Rails application..
(Deep) copying an array using jQuery [duplicate] http://stackoverflow.com/questions/565430/deep-copying-an-array-using-jquery 1 2 3 var b a.slice b.shift .shift a is now 2 3 Note that although I've used shift .shift above the point is just that b 0 0 contains..
http://stackoverflow.com/questions/5874652/prop-vs-attr and not the DOM directly this could be a confusing change although it is definitely an improvement conceptually. Not so good for..
http://stackoverflow.com/questions/744554/jquery-ui-dialog-positioning The 4th demo sounds similar to what you are trying to do although I see that it doesn't have the precise positioning option that..
jQuery: difference between .click() AND .on(“click” http://stackoverflow.com/questions/8018760/jquery-difference-between-click-and-onclick binding the event handlers directly is likely to be faster although performance is unlikely to be an issue . For a larger number..
jQuery CSS plugin that returns computed style of element to pseudo clone that element? http://stackoverflow.com/questions/1004475/jquery-css-plugin-that-returns-computed-style-of-element-to-pseudo-clone-that-el properties gathered from Firebug's computed style list . Although it's getting a long list of values it's quite fast. Hope it's..
jQuery Menu and ASP.NET Sitemap http://stackoverflow.com/questions/103630/jquery-menu-and-asp-net-sitemap Menu' .superfish would help but it didn't. ONE MORE THING Although it is a hack and please someone point me to the correct solution..
What's the difference in the :not() selector between jQuery and CSS? http://stackoverflow.com/questions/10711730/whats-the-difference-in-the-not-selector-between-jquery-and-css the not selector but that's just my take on it . 2 1 Although this article says that you can pass a comma separated list of..
Web browser: Hide mouse cursor http://stackoverflow.com/questions/1361404/web-browser-hide-mouse-cursor is Firefox so perhaps there's a plug in that achieves this Although it would be preferable to be able to do this via JavaScript..
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal bigger as a new key is added for every removed element. Although removeData should be removing those cache entries OK IE does..
Code breaks when updating jQuery due to changes in toggle http://stackoverflow.com/questions/16305318/code-breaks-when-updating-jquery-due-to-changes-in-toggle it slides down the container explaining the instructions. Although I believe the best result would be to just rewrite the jquery..
Using javascript to scroll iframe up and down http://stackoverflow.com/questions/1656665/using-javascript-to-scroll-iframe-up-and-down not be able to alter it's DOM due to security reasons. Although you can scroll it by using the arrow keys when you have it activated...
http://stackoverflow.com/questions/1738785/handling-of-server-side-http-4nn-5nn-errors-returning-a-whole-html-document-in-j document.write xhr.responseText document.close Although it works perfectly it feels to me like a hack. Replacing the..
jQuery plugin design pattern (common practice?) for dealing with private functions http://stackoverflow.com/questions/2061501/jquery-plugin-design-pattern-common-practice-for-dealing-with-private-functio fill function obj color obj.css 'background color' color Although this solution is effective and nicely namespaced I really dislike..
What does this JavaScript/jQuery syntax mean? http://stackoverflow.com/questions/2309614/what-does-this-javascript-jquery-syntax-mean longer notation might be function MyDefs ... MyDefs jQuery Although that would create a variable MyDefs in the global namespace...
How to get the full path of the file from a file input [duplicate] http://stackoverflow.com/questions/4176377/how-to-get-the-full-path-of-the-file-from-a-file-input browser will not allow this because of security concerns. Although there are workarounds the fact is that you shouldn't count on..
Help! I've learned jQuery… now I want to learn JavaScript [closed] http://stackoverflow.com/questions/4269426/help-ive-learned-jquery-now-i-want-to-learn-javascript I am unsure where this technique can actually benefit me. Although as I understand it that's what my jQuery plugins do with function..
Choosing Mobile Web HTML5 Framework [closed] http://stackoverflow.com/questions/5063117/choosing-mobile-web-html5-framework NimbleKit Wink Toolkit The main thing for me is HTML5. Although I went over the features they offer I just wanted to know your.. on the JavaScript appears to be in Alpha may be buggy Although I have never worked with M Project myself thanks for pointing..
Cross Domain Ajax Request with JQuery/PHP http://stackoverflow.com/questions/752319/cross-domain-ajax-request-with-jquery-php config at foobar.com must have allow_url_fopen set to 1 . Although this is the default setting some servers have it disabled. the..
How would I implement stackoverflow's hovering dialogs? http://stackoverflow.com/questions/758906/how-would-i-implement-stackoverflows-hovering-dialogs popup stackoverflow.com share improve this question Although I was under the impression they used jQuery's UI Dialog for..
Turning live() into on() in jQuery http://stackoverflow.com/questions/8021436/turning-live-into-on-in-jquery 'select name^ income_type_ ' function alert this .val Although it is better if you bind the event handler as close as possible..
How do I get CSS mediaqueries to work with jQuery $(window).innerWidth()? http://stackoverflow.com/questions/8472566/how-do-i-get-css-mediaqueries-to-work-with-jquery-window-innerwidth seems to me to be a browser specific problem as you said. Although it seems incorrect intuitively Firefox and other browsers with..
jQuery disable SELECT options based on Radio selected (Need support for all browsers) http://stackoverflow.com/questions/877328/jquery-disable-select-options-based-on-radio-selected-need-support-for-all-brow filter a select based on a radio's selected ID attribute. Although the rest of the solutions will get the job done if you are planning..
Is it possible to use jQuery .on and hover? http://stackoverflow.com/questions/9827095/is-it-possible-to-use-jquery-on-and-hover the answers provided below you can use hover with .on but Although strongly discouraged for new code you may see the pseudo event..
How can I detect with JavaScript/jQuery if the user is currently active on the page? http://stackoverflow.com/questions/1009260/how-can-i-detect-with-javascript-jquery-if-the-user-is-currently-active-on-the-p then just keep resetting a timer for 30 minutes but I'm not exactly sure how to create this. I have jQuery available although I'm not sure how much of this will actually use jQuery. Edit I'm more needing to know if they are actively using the site..
Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail http://stackoverflow.com/questions/1014203/best-way-to-use-googles-hosted-jquery-but-fall-back-to-my-hosted-library-on-go ' script This should be in your page's head and any jQuery ready event handlers should be in the body to avoid errors although it's not fool proof . One more reason to not use Google hosted jQuery is that in some countries Google's domain name is..
What CSS3 selectors does jQuery really support, e.g. :nth-last-child()? http://stackoverflow.com/questions/11745274/what-css3-selectors-does-jquery-really-support-e-g-nth-last-child this with a simple if statement so it doesn't fail in that sense of the word but you get the picture . In your case although IE9 and IE8 implement document.querySelectorAll IE8 doesn't support nth last child . Since jQuery Sizzle doesn't implement..
If a DOM Element is removed, are its listeners also removed from memory? http://stackoverflow.com/questions/12528049/if-a-dom-element-is-removed-are-its-listeners-also-removed-from-memory the element but all bound events too. In older versions of jQuery remove apparently had some memory leak issues itself although these issues were later attributed to be a Javascript problem and not jQuery specific . Of course there are ways to unbind..
http://stackoverflow.com/questions/1419731/jquery-framework-internals used event handlers know CSS basics. I have read about many of the topics you have mentioned and I am familiar with it although not an expert and have not coded some of the advanced topics like closures. Here are the books I have used so far Head first..
jQuery resize not working at FireFox, Chrome and Safari http://stackoverflow.com/questions/229010/jquery-resize-not-working-at-firefox-chrome-and-safari values of width height and check them on resize Finally you could consider using watch on the width height properties although I don't know whether this is fully browser compatible think this might be Mozilla only . I did find this jQuery plugin which..
What are the typical reasons Javascript developed on Firefox fails on IE? [closed] http://stackoverflow.com/questions/2599020/what-are-the-typical-reasons-javascript-developed-on-firefox-fails-on-ie don't work on IE 6 and 7 so far . The scripts are somehow not executed the pages show as if javascript wasn't there although some javascript is executed. I am using own libraries with dom manipulation from YUI 2 I use YUI Loader and the XML Http..
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean Type 2 This is again not a plugin as it does not extend the .fn object. It's just an extenstion of the jQuery core although the outcome is the same. This is if you want to add traversing functions such as toArray and so on. Type 3 This is the best..
http://stackoverflow.com/questions/3015335/jquery-html-vs-append quantity of checks that jQuery performs have a look here here and here . innerHTML is generally the faster approach although don't let that govern what you do all the time. jQuery's approach isn't quite as simple as element.innerHTML ... as I mentioned..
navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't http://stackoverflow.com/questions/3397585/navigator-geolocation-getcurrentposition-sometimes-works-sometimes-doesnt experienced quite different reliability in different contexts. Here at home I get a callback within a second or two although the accuracy is poor. At work however I experience quite bizarre variations in behavior Geolocation works on some computers..
“javascript:void(0);” vs “return false” vs “preventDefault()” http://stackoverflow.com/questions/3498492/javascriptvoid0-vs-return-false-vs-preventdefault a compromise is to use a span instead. You can add a tabindex property to make it keyboard accessible in most browsers although this isn't really properly standardised. You can also detect keypresses like Space or Enter on it to activate. This is kind..
Jquery toggle event is messing with checkbox value http://stackoverflow.com/questions/355638/jquery-toggle-event-is-messing-with-checkbox-value replied. Dreas' answer very nearly worked for me except for the part that checked the attribute. This works perfectly although it's a bit hacky 'input#myInput' .change function if this .hasClass checked do stuff if the checkbox isn't checked this..
JavaScript: Invert color on all elements of a page http://stackoverflow.com/questions/4766201/javascript-invert-color-on-all-elements-of-a-page am unsure of how to proceed. How can I accomplish this Using jQuery is acceptable and it only needs to work on Chrome although if it worked in Firefox that'd be a plus. This is excluding images background text and links colors should all be inverted...
http://stackoverflow.com/questions/512257/jquery-modal-boxes-and-iframe element. I think that this is certainly achievable with a little effort I started hacking together something here although I stress that this was simply a POC and does not work as the button within the iframe removes the fancybox div wrapper from..
Rails not reloading session on ajax post http://stackoverflow.com/questions/5126721/rails-not-reloading-session-on-ajax-post not reloading session on ajax post I'm experiencing a very strange problem with Rails and ajax using jQuery although I don't think it's specific to jQuery . My Rails application uses the cookie session store and I have a very simple login..
(Deep) copying an array using jQuery [duplicate] http://stackoverflow.com/questions/565430/deep-copying-an-array-using-jquery copying it is not suitable for multidimensional arrays var a 1 2 3 var b a.slice b.shift .shift a is now 2 3 Note that although I've used shift .shift above the point is just that b 0 0 contains a pointer to a 0 0 rather than a value. Likewise delete..
http://stackoverflow.com/questions/5874652/prop-vs-attr attr . Original answer If you've only ever used jQuery and not the DOM directly this could be a confusing change although it is definitely an improvement conceptually. Not so good for the bazillions of sites using jQuery that will break as a..
http://stackoverflow.com/questions/744554/jquery-ui-dialog-positioning
jQuery: difference between .click() AND .on(“click” http://stackoverflow.com/questions/8018760/jquery-difference-between-click-and-onclick one. For a small number of elements fewer than five say binding the event handlers directly is likely to be faster although performance is unlikely to be an issue . For a larger number of elements always use .on . The other advantage of .on is..
jQuery CSS plugin that returns computed style of element to pseudo clone that element? http://stackoverflow.com/questions/1004475/jquery-css-plugin-that-returns-computed-style-of-element-to-pseudo-clone-that-el Otherwise it gets the computed styles of all the listed properties gathered from Firebug's computed style list . Although it's getting a long list of values it's quite fast. Hope it's useful to others. javascript jquery css web applications..
jQuery Menu and ASP.NET Sitemap http://stackoverflow.com/questions/103630/jquery-menu-and-asp-net-sitemap tag gets a class AspNet Menu . I thought the line 'ul.AspNet Menu' .superfish would help but it didn't. ONE MORE THING Although it is a hack and please someone point me to the correct solution I was able to get it working by opening the superfish.css..
What's the difference in the :not() selector between jQuery and CSS? http://stackoverflow.com/questions/10711730/whats-the-difference-in-the-not-selector-between-jquery-and-css IMO as you should rarely ever need to use combinators within the not selector but that's just my take on it . 2 1 Although this article says that you can pass a comma separated list of selectors to not in Firefox 3 you're not supposed to be able..
Web browser: Hide mouse cursor http://stackoverflow.com/questions/1361404/web-browser-hide-mouse-cursor only by use of a browser plug in. The browser in use is Firefox so perhaps there's a plug in that achieves this Although it would be preferable to be able to do this via JavaScript jQuery. javascript jquery html firefox web browser share..
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal the data store not a really a cache as such getting bigger and bigger as a new key is added for every removed element. Although removeData should be removing those cache entries OK IE does not appear to recover the space when you delete a key from..
Code breaks when updating jQuery due to changes in toggle http://stackoverflow.com/questions/16305318/code-breaks-when-updating-jquery-due-to-changes-in-toggle a instructions display box which has an icon and upon click it slides down the container explaining the instructions. Although I believe the best result would be to just rewrite the jquery for it I bring this example to the experts of SO to explain..
Using javascript to scroll iframe up and down http://stackoverflow.com/questions/1656665/using-javascript-to-scroll-iframe-up-and-down Since the iframe content is from another domain you will not be able to alter it's DOM due to security reasons. Although you can scroll it by using the arrow keys when you have it activated. At least it works for me in Chrome and Firefox. If..
http://stackoverflow.com/questions/1738785/handling-of-server-side-http-4nn-5nn-errors-returning-a-whole-html-document-in-j error handleXhrError function handleXhrError xhr document.open document.write xhr.responseText document.close Although it works perfectly it feels to me like a hack. Replacing the entire document with the contents of the HTTP error page. But..
jQuery plugin design pattern (common practice?) for dealing with private functions http://stackoverflow.com/questions/2061501/jquery-plugin-design-pattern-common-practice-for-dealing-with-private-functio be to put it in a function within the plugin's namespace var fill function obj color obj.css 'background color' color Although this solution is effective and nicely namespaced I really dislike it. For one simple reason I have to pass it the jQuery..
What does this JavaScript/jQuery syntax mean? http://stackoverflow.com/questions/2309614/what-does-this-javascript-jquery-syntax-mean function is called and that everything in it is defined. A longer notation might be function MyDefs ... MyDefs jQuery Although that would create a variable MyDefs in the global namespace. The anonymous function pattern leaves the global namespace..
How to get the full path of the file from a file input [duplicate] http://stackoverflow.com/questions/4176377/how-to-get-the-full-path-of-the-file-from-a-file-input html share improve this question You cannot do so the browser will not allow this because of security concerns. Although there are workarounds the fact is that you shouldn't count on this working. The following Stack Overflow questions are relevant..
Help! I've learned jQuery… now I want to learn JavaScript [closed] http://stackoverflow.com/questions/4269426/help-ive-learned-jquery-now-i-want-to-learn-javascript I have a basic understanding of what a closure is... but I am unsure where this technique can actually benefit me. Although as I understand it that's what my jQuery plugins do with function plugin code here jQuery . I've seen many posts blogs whatever..
Choosing Mobile Web HTML5 Framework [closed] http://stackoverflow.com/questions/5063117/choosing-mobile-web-html5-framework out these Sencha Touch M Project jQuery Mobile jQTouch Titanium NimbleKit Wink Toolkit The main thing for me is HTML5. Although I went over the features they offer I just wanted to know your experience if any with them. Which one should I go for when.. professional team providing support. M Project MIT license heavy on the JavaScript appears to be in Alpha may be buggy Although I have never worked with M Project myself thanks for pointing it out it does appear to be a very robust and the coding style..
Cross Domain Ajax Request with JQuery/PHP http://stackoverflow.com/questions/752319/cross-domain-ajax-request-with-jquery-php comes from somewhere else behind the scene . Caveats the PHP config at foobar.com must have allow_url_fopen set to 1 . Although this is the default setting some servers have it disabled. the request to www.boobar.com is made from foobar.com server..
How would I implement stackoverflow's hovering dialogs? http://stackoverflow.com/questions/758906/how-would-i-implement-stackoverflows-hovering-dialogs strip on the top of the screen. javascript jquery dialog popup stackoverflow.com share improve this question Although I was under the impression they used jQuery's UI Dialog for this I am not too sure anymore. However it is not too difficult..
Turning live() into on() in jQuery http://stackoverflow.com/questions/8021436/turning-live-into-on-in-jquery to .live would be something like document.body .on 'change' 'select name^ income_type_ ' function alert this .val Although it is better if you bind the event handler as close as possible to the elements that is to an element being closer in the..
How do I get CSS mediaqueries to work with jQuery $(window).innerWidth()? http://stackoverflow.com/questions/8472566/how-do-i-get-css-mediaqueries-to-work-with-jquery-window-innerwidth most modern browsers anyway . The bug that you encountered seems to me to be a browser specific problem as you said. Although it seems incorrect intuitively Firefox and other browsers with the issue actually seems to match the W3C recommendation..
jQuery disable SELECT options based on Radio selected (Need support for all browsers) http://stackoverflow.com/questions/877328/jquery-disable-select-options-based-on-radio-selected-need-support-for-all-brow something so I whipped up a small plugin to easily filter a select based on a radio's selected ID attribute. Although the rest of the solutions will get the job done if you are planning on doing this throughout your app this should help...
Is it possible to use jQuery .on and hover? http://stackoverflow.com/questions/9827095/is-it-possible-to-use-jquery-on-and-hover function stuff to do on mouse leave According to the answers provided below you can use hover with .on but Although strongly discouraged for new code you may see the pseudo event name hover used as a shorthand for the string mouseenter..
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