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2014/10/16 ¤W¤È 12:08:37
jquery Programming Glossary: slowerWhat is the cost of '$(this)'? http://stackoverflow.com/questions/10433014/what-is-the-cost-of-this object has only a little effect In Chrome it's only 7 slower. In IE it's a little bit more significant 12 share improve..
what's faster? CSS3 transitions or jQuery animations? http://stackoverflow.com/questions/10984771/whats-faster-css3-transitions-or-jquery-animations question According to this link jQuery animation is much slower then css animation. Reason can be because jquery has to modify..
What's wrong with the jQuery live method? http://stackoverflow.com/questions/11115864/whats-wrong-with-the-jquery-live-method widgets. .stopPropagation doesn ™t work with live. .live is slower. .live is not chainable. Further beauty of .on is that it streamlines..
jQuery vs document.querySelectorAll http://stackoverflow.com/questions/11503534/jquery-vs-document-queryselectorall much lines of code you write with jQuery and be possibly slower. Also you would have to consider crossbrowser issues. share..
Should all jquery events be bound to $(document)? http://stackoverflow.com/questions/12824549/should-all-jquery-events-be-bound-to-document 'active' Which seems to meet all my goals. Yes it's slower in IE for some reason no idea why It's fast because only a single..
Struggling between native and phonegap, simple app requirements http://stackoverflow.com/questions/14065610/struggling-between-native-and-phonegap-simple-app-requirements a device. If possible always create a app that works on a slower devices because native app will successfully work on almost..
JQuery - checkbox enable/disable http://stackoverflow.com/questions/2330209/jquery-checkbox-enable-disable
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 aware that IE8 in standards compliance mode is many times slower and has many more glitches than when in quirks mode when using..
JQuery: Remove duplicate elements? http://stackoverflow.com/questions/2822962/jquery-remove-duplicate-elements containing all values. However this would make it much slower since to see if a value is in the array we'd need to scan the..
How do you check if a selector matches something in jQuery? http://stackoverflow.com/questions/299802/how-do-you-check-if-a-selector-matches-something-in-jquery you absolutely must have an exists function which will be slower you can do jQuery.fn.exists function return this.length 0 Then..
What is the fastest method for selecting descendant elements in jQuery? http://stackoverflow.com/questions/3177763/what-is-the-fastest-method-for-selecting-descendant-elements-in-jquery 3 is still best then method 4 5 and then 1 2 On IE 8 while slower overall than other browsers it still follows the Method 3 1..
jQuery Optimization/Best Practices http://stackoverflow.com/questions/3230727/jquery-optimization-best-practices It's easy to see that '.rowStripeClass' would be much slower than '#tableDiv.rowStripeClass' but where do we draw the line..
Can I conditionally change the character entered into an input on keypress? http://stackoverflow.com/questions/3923089/can-i-conditionally-change-the-character-entered-into-an-input-on-keypress but this is an ugly and messy way of doing it and probably slower than it could be. function onKeypressHandler e if condition..
Efficient, concise way to find next matching sibling? http://stackoverflow.com/questions/4933236/efficient-concise-way-to-find-next-matching-sibling selector match match.next return match ...is markedly slower than nextAll selector first . And that's not surprising nextAll..
What good is JSLint if jQuery fails the validation [closed] http://stackoverflow.com/questions/505251/what-good-is-jslint-if-jquery-fails-the-validation token and that can sometimes be dangerous it's always slower . And several of those errors are related to JSLint not expecting..
How to enforce a “smooth scrolling” rule for mousewheel, jQuery? http://stackoverflow.com/questions/5560714/how-to-enforce-a-smooth-scrolling-rule-for-mousewheel-jquery to a half of the browsers native scroll notch so it moves slower which is fine surly that's adjustable. We still have the stall..
Does using $this instead of $(this) provide a performance enhancement? http://stackoverflow.com/questions/5724400/does-using-this-instead-of-this-provide-a-performance-enhancement reuse. A performance test shows that this is significantly slower than this . However as both are performing millions of operations..
Switch statement for greater-than/less-than http://stackoverflow.com/questions/6665997/switch-statement-for-greater-than-less-than something break switch range This is about 6 to 40 times slower than the fastest in all tested environments except for Opera.. switch but with a binary search. Unfortunately it is slower than the linear search. I don't know if it is my implementation..
Best way to populate select list with JQuery / Json? http://stackoverflow.com/questions/9995017/best-way-to-populate-select-list-with-jquery-json and appends the Option elements one at a time which may be slower than Templates . I suspect that Templates builds the whole HTML..
What is the cost of '$(this)'? http://stackoverflow.com/questions/10433014/what-is-the-cost-of-this
what's faster? CSS3 transitions or jQuery animations? http://stackoverflow.com/questions/10984771/whats-faster-css3-transitions-or-jquery-animations elements with jQuery jquery ipad css3 share improve this question According to this link jQuery animation is much slower then css animation. Reason can be because jquery has to modify the props of the DOM element using timers and a loop. The..
What's wrong with the jQuery live method? http://stackoverflow.com/questions/11115864/whats-wrong-with-the-jquery-live-method appears to be down Quote You can ™t use .live for reusable widgets. .stopPropagation doesn ™t work with live. .live is slower. .live is not chainable. Further beauty of .on is that it streamlines all events quite well http api.jquery.com on D'uh..
jQuery vs document.querySelectorAll http://stackoverflow.com/questions/11503534/jquery-vs-document-queryselectorall
Should all jquery events be bound to $(document)? http://stackoverflow.com/questions/12824549/should-all-jquery-events-be-bound-to-document widget namespace' '.my widget a' function this .toggleClass 'active' Which seems to meet all my goals. Yes it's slower in IE for some reason no idea why It's fast because only a single event is tied to a singular element and the secondary..
Struggling between native and phonegap, simple app requirements http://stackoverflow.com/questions/14065610/struggling-between-native-and-phonegap-simple-app-requirements mention that mobile phones behave differently depending on a device. If possible always create a app that works on a slower devices because native app will successfully work on almost any device. There's one last thing when creating hybrid apps..
JQuery - checkbox enable/disable http://stackoverflow.com/questions/2330209/jquery-checkbox-enable-disable
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 in place wrapper for canvas elements for many operations. Be aware that IE8 in standards compliance mode is many times slower and has many more glitches than when in quirks mode when using VML. SVG IE9 supports SVG natively. IE6 8 can support SVG..
JQuery: Remove duplicate elements? http://stackoverflow.com/questions/2822962/jquery-remove-duplicate-elements An alternative way to represent a set is to use an array containing all values. However this would make it much slower since to see if a value is in the array we'd need to scan the entire array each time. Looking up a key in an object using..
How do you check if a selector matches something in jQuery? http://stackoverflow.com/questions/299802/how-do-you-check-if-a-selector-matches-something-in-jquery way to do it seems to be if selector .length Do something If you absolutely must have an exists function which will be slower you can do jQuery.fn.exists function return this.length 0 Then in your code you can use if selector .exists Do something..
What is the fastest method for selecting descendant elements in jQuery? http://stackoverflow.com/questions/3177763/what-is-the-fastest-method-for-selecting-descendant-elements-in-jquery is still best then method 1 2 and then 4 5 On Opera Method 3 is still best then method 4 5 and then 1 2 On IE 8 while slower overall than other browsers it still follows the Method 3 1 2 4 5 ordering. Overall method 3 is the overal best method to..
jQuery Optimization/Best Practices http://stackoverflow.com/questions/3230727/jquery-optimization-best-practices is it ALWAYS beneficial to be more specific with our selectors It's easy to see that '.rowStripeClass' would be much slower than '#tableDiv.rowStripeClass' but where do we draw the line Is 'body div#tableDiv table tbody tr.rowStripeClass' faster..
Can I conditionally change the character entered into an input on keypress? http://stackoverflow.com/questions/3923089/can-i-conditionally-change-the-character-entered-into-an-input-on-keypress I can do it by manually appending the changed character but this is an ugly and messy way of doing it and probably slower than it could be. function onKeypressHandler e if condition j this .val j this .val String.fromCharCode e.which 32 return..
Efficient, concise way to find next matching sibling? http://stackoverflow.com/questions/4933236/efficient-concise-way-to-find-next-matching-sibling selector var match match this.next while match.length 0 match.is selector match match.next return match ...is markedly slower than nextAll selector first . And that's not surprising nextAll can hand the whole thing off to Sizzle and Sizzle has been..
What good is JSLint if jQuery fails the validation [closed] http://stackoverflow.com/questions/505251/what-good-is-jslint-if-jquery-fails-the-validation forces the browser to guess where to insert the end of statement token and that can sometimes be dangerous it's always slower . And several of those errors are related to JSLint not expecting or supporting multiple assignments like jQuery does on..
How to enforce a “smooth scrolling” rule for mousewheel, jQuery? http://stackoverflow.com/questions/5560714/how-to-enforce-a-smooth-scrolling-rule-for-mousewheel-jquery of the page. Each scroll notch from the wheel is a third to a half of the browsers native scroll notch so it moves slower which is fine surly that's adjustable. We still have the stall stall stall method of page movement though. I myself write..
Does using $this instead of $(this) provide a performance enhancement? http://stackoverflow.com/questions/5724400/does-using-this-instead-of-this-provide-a-performance-enhancement each time you use this while this keeps the same object for reuse. A performance test shows that this is significantly slower than this . However as both are performing millions of operations a second it is unlikely either will have any real impact..
Switch statement for greater-than/less-than http://stackoverflow.com/questions/6665997/switch-statement-for-greater-than-less-than 0 do something break case 1 do something break ... case 29 do something break switch range This is about 6 to 40 times slower than the fastest in all tested environments except for Opera where it takes about one and a half times as long. It is slow.. break array binary switch This is a variant of array linear switch but with a binary search. Unfortunately it is slower than the linear search. I don't know if it is my implementation or if the linear search is more optimized. It could also..
Best way to populate select list with JQuery / Json? http://stackoverflow.com/questions/9995017/best-way-to-populate-select-list-with-jquery-json not sure if it's faster than jQuery Templates. It creates and appends the Option elements one at a time which may be slower than Templates . I suspect that Templates builds the whole HTML string and then creates the DOM elements all in one shot...
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