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2014/10/16 ¤W¤È 12:06:41
jquery Programming Glossary: queryselectorallWhat'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 will cause the selector string to return results using querySelectorAll and or matchesSelector instead of falling back to Sizzle jQuery's..
jQuery - Raphael - SVG - selector based on custom data http://stackoverflow.com/questions/11187856/jquery-raphael-svg-selector-based-on-custom-data data value Currently I have the code var found document.querySelectorAll transaction ' current_transaction ' Which should return a NodeList.. I cannot work out the correct syntax var found document.querySelectorAll data 'transaction' 1 Any help would be much appreciated javascript.. transaction Then you can then query the elements with querySelectorAll . Keep in mind this will fail on IE8. If you want to keep older..
jQuery vs document.querySelectorAll http://stackoverflow.com/questions/11503534/jquery-vs-document-queryselectorall vs document.querySelectorAll I heard several times that jQuery's strongest asset is the.. the same result with document.querySelector or document.querySelectorAll which are supported in ie8 and above . So the question is why.. taking all element or only the first. 'ul.first' taking querySelectorAll has to be considered var e document.querySelector ul.first 2..
Why does jQuery or a DOM method such as `getElementById` not find the element? http://stackoverflow.com/questions/14028959/why-does-jquery-or-a-dom-method-such-as-getelementbyid-not-find-the-element of contemporary browsers which implement querySelector and querySelectorAll methods CSS style notation is used to retrieve an element by..
What can I use instead of the :indeterminate jQuery selector to avoid an exception in IE 8? http://stackoverflow.com/questions/14625719/what-can-i-use-instead-of-the-indeterminate-jquery-selector-to-avoid-an-excepti ' indeterminate' pseudo expression is not supported by IE8 querySelectorAll implementation. But in your case it's actually not required..
jQuery support “:invalid” selector http://stackoverflow.com/questions/15820780/jquery-support-invalid-selector jquery selectors share improve this question Using querySelectorAll as suggested by @JanDvorak and his answer should be accepted.. ' invalid function elem index match var invalids document.querySelectorAll ' invalid' result false len invalids.length if len for var..
FireFox warning “Unknown pseudo-class or pseudo-element 'hidden' ” keeps running over and over http://stackoverflow.com/questions/1836252/firefox-warning-unknown-pseudo-class-or-pseudo-element-hidden-keeps-running some cases Sizzle tries to use on browsers supported the querySelectorAll function to find the elements matching your selector. Now AFAIK.. CSS selector thus although Firefox supports the call to querySelectorAll it correctly fails after encountering an unknown selector. jQuery.. this case would stop Sizzle from trying to attempt to use querySelectorAll . Change 'img hidden' .eq 0 .fadeIn 500 to 'img hidden' 'div#content_wrapper'..
:nth-of-type() in jQuery / Sizzle? http://stackoverflow.com/questions/2093355/nth-of-type-in-jquery-sizzle Since Sizzle uses the browser native querySelector and querySelectorAll methods if those are present i.e. in browsers that already implement..
How to tell jQuery to stop searching DOM when the first element is found? http://stackoverflow.com/questions/3950888/how-to-tell-jquery-to-stop-searching-dom-when-the-first-element-is-found so don't use first . In this case jQuery uses the fast DOM querySelectorAll method in modern browsers. You can get the optimisation manually..
jQuery create object from form fields http://stackoverflow.com/questions/5603117/jquery-create-object-from-form-fields jQuery can't hand off the selector to the browser's native querySelectorAll which nearly all browsers now have . Nowadays I'd probably write..
Use javascript to count immediate child elements of an element http://stackoverflow.com/questions/5685184/use-javascript-to-count-immediate-child-elements-of-an-element improve this question Use the DOM selector interface querySelectorAll . var selectionCount document.querySelectorAll #window section.. interface querySelectorAll . var selectionCount document.querySelectorAll #window section .length If you want a backwards compatible solution..
jQuery single selector vs .find() http://stackoverflow.com/questions/6230266/jquery-single-selector-vs-find h2 div1 h3 should be faster as jQuery will pipe it through querySelectorAll if it exists and native code will run faster than non native..
Performance differences between using “:not” and “.not()” selectors? http://stackoverflow.com/questions/8845811/performance-differences-between-using-not-and-not-selectors question Depends on the browser. Browsers that support querySelectorAll will get a performance boost with... table td not first child..
Method for selecting elements in Sizzle using fully-qualified URLs http://stackoverflow.com/questions/9222026/method-for-selecting-elements-in-sizzle-using-fully-qualified-urls that jQuery only falls back to Sizzle if querySelector and querySelectorAll are not available natively and that both of these work the same..
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 a selector string in a way that makes it a valid CSS selector will cause the selector string to return results using querySelectorAll and or matchesSelector instead of falling back to Sizzle jQuery's selector engine which implements the not extension . If..
jQuery - Raphael - SVG - selector based on custom data http://stackoverflow.com/questions/11187856/jquery-raphael-svg-selector-based-on-custom-data I find elements on the canvas that have the same transaction data value Currently I have the code var found document.querySelectorAll transaction ' current_transaction ' Which should return a NodeList with the elements but it doesn't work. To retrieve the.. Therefore I want my selector to be look as follows but I cannot work out the correct syntax var found document.querySelectorAll data 'transaction' 1 Any help would be much appreciated javascript jquery html data raphael share improve this question.. attribute there... marker.node.setAttribute 'data transaction' transaction Then you can then query the elements with querySelectorAll . Keep in mind this will fail on IE8. If you want to keep older IE support I'd recommend writing a function that iterates..
jQuery vs document.querySelectorAll http://stackoverflow.com/questions/11503534/jquery-vs-document-queryselectorall vs document.querySelectorAll I heard several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM you can use.. regular javascript . However as far as I know you can achieve the same result with document.querySelector or document.querySelectorAll which are supported in ie8 and above . So the question is why 'risk' jQuery's overhead if it's strongest asset can be achieved.. by the pseudocode above 1 find the element consider taking all element or only the first. 'ul.first' taking querySelectorAll has to be considered var e document.querySelector ul.first 2 iterate over the array of childnodes via some possibly nested..
Why does jQuery or a DOM method such as `getElementById` not find the element? http://stackoverflow.com/questions/14028959/why-does-jquery-or-a-dom-method-such-as-getelementbyid-not-find-the-element have not misspelled the ID. Incidentally in the majority of contemporary browsers which implement querySelector and querySelectorAll methods CSS style notation is used to retrieve an element by its id for example document.querySelector '#elementID' as opposed..
What can I use instead of the :indeterminate jQuery selector to avoid an exception in IE 8? http://stackoverflow.com/questions/14625719/what-can-i-use-instead-of-the-indeterminate-jquery-selector-to-avoid-an-excepti if allChk 0 allChk 0 .indeterminate ... The problem is that ' indeterminate' pseudo expression is not supported by IE8 querySelectorAll implementation. But in your case it's actually not required to use it as you can query the corresponding property of DOM..
jQuery support “:invalid” selector http://stackoverflow.com/questions/15820780/jquery-support-invalid-selector jQuery version stops working after 1.9 javascript jquery html jquery selectors share improve this question Using querySelectorAll as suggested by @JanDvorak and his answer should be accepted for thinking of that you can write your own expression making.. making .is ' invalid' valid jQuery.extend jQuery.expr ' ' invalid function elem index match var invalids document.querySelectorAll ' invalid' result false len invalids.length if len for var i 0 i len i if elem invalids i result true break return..
FireFox warning “Unknown pseudo-class or pseudo-element 'hidden' ” keeps running over and over http://stackoverflow.com/questions/1836252/firefox-warning-unknown-pseudo-class-or-pseudo-element-hidden-keeps-running . jQuery uses Sizzle internally as selector engine. And in some cases Sizzle tries to use on browsers supported the querySelectorAll function to find the elements matching your selector. Now AFAIK is hidden not a valid CSS selector thus although Firefox.. matching your selector. Now AFAIK is hidden not a valid CSS selector thus although Firefox supports the call to querySelectorAll it correctly fails after encountering an unknown selector. jQuery catches the error and then does the selection of image.. error at all you can use a different jQuery syntax which in this case would stop Sizzle from trying to attempt to use querySelectorAll . Change 'img hidden' .eq 0 .fadeIn 500 to 'img hidden' 'div#content_wrapper' .eq 0 .fadeIn 500 But I don't advise you to..
:nth-of-type() in jQuery / Sizzle? http://stackoverflow.com/questions/2093355/nth-of-type-in-jquery-sizzle p nth of type 2n ' .css 'background' 'orange' script body html Since Sizzle uses the browser native querySelector and querySelectorAll methods if those are present i.e. in browsers that already implement the Selectors API stuff like 'body p nth child' will..
How to tell jQuery to stop searching DOM when the first element is found? http://stackoverflow.com/questions/3950888/how-to-tell-jquery-to-stop-searching-dom-when-the-first-element-is-found CSS selector not including any Sizzle specific selectors so don't use first . In this case jQuery uses the fast DOM querySelectorAll method in modern browsers. You can get the optimisation manually by using the DOM querySelector method which is built to..
jQuery create object from form fields http://stackoverflow.com/questions/5603117/jquery-create-object-from-form-fields for the input pseudo selector using it means that jQuery can't hand off the selector to the browser's native querySelectorAll which nearly all browsers now have . Nowadays I'd probably write #theForm .find input textarea select button ... ...if I..
Use javascript to count immediate child elements of an element http://stackoverflow.com/questions/5685184/use-javascript-to-count-immediate-child-elements-of-an-element only. javascript jquery count parent child immediate share improve this question Use the DOM selector interface querySelectorAll . var selectionCount document.querySelectorAll #window section .length If you want a backwards compatible solution loop.. share improve this question Use the DOM selector interface querySelectorAll . var selectionCount document.querySelectorAll #window section .length If you want a backwards compatible solution loop through childNodes and count element nodes. var..
jQuery single selector vs .find() http://stackoverflow.com/questions/6230266/jquery-single-selector-vs-find to determine bottlenecks. From an analysis standpoint .div1 h2 div1 h3 should be faster as jQuery will pipe it through querySelectorAll if it exists and native code will run faster than non native code. It will also save on an additional function call. .div1..
Performance differences between using “:not” and “.not()” selectors? http://stackoverflow.com/questions/8845811/performance-differences-between-using-not-and-not-selectors jquery jquery selectors css selectors share improve this question Depends on the browser. Browsers that support querySelectorAll will get a performance boost with... table td not first child ...because it is a valid selector. Older browsers IE7 and..
Method for selecting elements in Sizzle using fully-qualified URLs http://stackoverflow.com/questions/9222026/method-for-selecting-elements-in-sizzle-using-fully-qualified-urls return true return false http jsfiddle.net dMuyj And that jQuery only falls back to Sizzle if querySelector and querySelectorAll are not available natively and that both of these work the same as jQuery's selector engine not surprising . The sum total..
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