¡@
2014/10/16 ¤W¤È 12:03:17
jquery Programming Glossary: expensiveWhat is the cost of '$(this)'? http://stackoverflow.com/questions/10433014/what-is-the-cost-of-this tag info this warning appears The jQuery function is expensive. Calling it repeatedly is extremely inefficient. Well... that.. than id jQuery traverse the DOM to find a match with it's expensive find function else if context context.jquery return context.. return context rootjQuery .find selector So yes it's expensive but that is only true for selectors If we pass a DOMElement..
NonSQL: initialization of DB -object in browser console? DB -logic in the user-space? http://stackoverflow.com/questions/11060894/nonsql-initialization-of-db-object-in-browser-console-db-logic-in-the-user-s for this purpose because it looks like the computation is expensive in non sql db and hence tend to be moved to the userspace. So..
Simple example about CouchJS in userspace for example with Browser? http://stackoverflow.com/questions/11076076/simple-example-about-couchjs-in-userspace-for-example-with-browser space with things such as JS because things tend to be expensive to execute on the database level Integrity In information security..
How to associate each option button with their own individual marks? http://stackoverflow.com/questions/11199379/how-to-associate-each-option-button-with-their-own-individual-marks the joins etc. you need to retrieve a single question are expensive operations. Let's say you want your HTML to look something like..
jquery: fastest DOM insertion? http://stackoverflow.com/questions/117665/jquery-fastest-dom-insertion mydiv .innerHTML html or is jquery doing some additional expensive stuff in the background Would love to learn alternatives as..
Creating tables dynamically in jQuery http://stackoverflow.com/questions/1226541/creating-tables-dynamically-in-jquery to the dom only once. Each append causes a redraw which is expensive. Failing that why not use a dedicated dom creation plugin to..
How do I check if the mouse is over an element in jQuery? http://stackoverflow.com/questions/1273566/how-do-i-check-if-the-mouse-is-over-an-element-in-jquery the data on callback of the fadeout. It is actually less expensive to use mouseenter mouseleave because they do not fire for the..
http://stackoverflow.com/questions/14545023/jquery-1-9-browser-detection popstate handler and make sure that it doesn't do anything expensive if you pop into the same state you started in. Then you can..
Detecting when a div's height changes using jQuery http://stackoverflow.com/questions/172821/detecting-when-a-divs-height-changes-using-jquery checking whether the dimensions have changed is less expensive and so you might consider combining the two. Or if you are directly..
jQuery tabs - getting newly selected index http://stackoverflow.com/questions/185235/jquery-tabs-getting-newly-selected-index is that the contents of each tabbed section are somewhat expensive to render so I don't want to just send them all at once and..
http://stackoverflow.com/questions/2954932/difference-between-jquery-click-bind-live-delegate-trigger-and-on attaching a click handler directly to each element is expensive and time consuming. In these cases it's more economical to setup..
Javascript: do an action after user is done scrolling http://stackoverflow.com/questions/4289473/javascript-do-an-action-after-user-is-done-scrolling
How to force advert to show on ajax-loaded page? (Adsense) http://stackoverflow.com/questions/6394594/how-to-force-advert-to-show-on-ajax-loaded-page-adsense relevant ads to your page you can make google show only expensive ads which usually pay 1 per click well google takes 4 to the..
Clone isn't cloning select values http://stackoverflow.com/questions/742810/clone-isnt-cloning-select-values the bug and provides a work around. Apparently it is too expensive to clone the select values so they won't fix it. http dev.jquery.com..
Is binding events in jQuery very expensive, or very inexpensive? http://stackoverflow.com/questions/905883/is-binding-events-in-jquery-very-expensive-or-very-inexpensive binding events in jQuery very expensive or very inexpensive I just wrote a .bind 'event' function and.. binding events in jQuery very expensive or very inexpensive I just wrote a .bind 'event' function and then got concerned.. then got concerned that this kind of a call might be very expensive if jQuery has to run through each element in the DOM to bind..
Gantt chart in javascript/jquery/extjs [closed] http://stackoverflow.com/questions/9085614/gantt-chart-in-javascript-jquery-extjs Dojo is free dhmlx has a cheap licence bryntum a more expensive licence and finally tgantt is the more expensive and more complex... a more expensive licence and finally tgantt is the more expensive and more complex. I am still evaluating some plugins for jQuery..
What is the cost of '$(this)'? http://stackoverflow.com/questions/10433014/what-is-the-cost-of-this by this question on meta I'll answer my question. In the jQuery tag info this warning appears The jQuery function is expensive. Calling it repeatedly is extremely inefficient. Well... that is true only for strings selectors which get parsed with regex.. ^ ^# w W ^ # w Then if the string is a selector other than id jQuery traverse the DOM to find a match with it's expensive find function else if context context.jquery return context rootjQuery .find selector So yes it's expensive but that is.. with it's expensive find function else if context context.jquery return context rootjQuery .find selector So yes it's expensive but that is only true for selectors If we pass a DOMElement the only action jQuery does is saving the DOMElement parameter..
NonSQL: initialization of DB -object in browser console? DB -logic in the user-space? http://stackoverflow.com/questions/11060894/nonsql-initialization-of-db-object-in-browser-console-db-logic-in-the-user-s lazy evaluation of things. I feel some non sql db is for this purpose because it looks like the computation is expensive in non sql db and hence tend to be moved to the userspace. So by which NonSQL db I can initialize the DB object in the user..
Simple example about CouchJS in userspace for example with Browser? http://stackoverflow.com/questions/11076076/simple-example-about-couchjs-in-userspace-for-example-with-browser CouchDB a NonSQL db where you execute most things in user space with things such as JS because things tend to be expensive to execute on the database level Integrity In information security integrity means that data cannot be modified undetectably...
How to associate each option button with their own individual marks? http://stackoverflow.com/questions/11199379/how-to-associate-each-option-button-with-their-own-individual-marks tables than you need to create a DB of questions and all the joins etc. you need to retrieve a single question are expensive operations. Let's say you want your HTML to look something like the following div class queWrap id question 72 h2 class..
jquery: fastest DOM insertion? http://stackoverflow.com/questions/117665/jquery-fastest-dom-insertion it correct that this is equivalent to document.getElementById mydiv .innerHTML html or is jquery doing some additional expensive stuff in the background Would love to learn alternatives as well. javascript jquery dom share improve this question ..
Creating tables dynamically in jQuery http://stackoverflow.com/questions/1226541/creating-tables-dynamically-in-jquery is better to build a string or push to an array and append to the dom only once. Each append causes a redraw which is expensive. Failing that why not use a dedicated dom creation plugin to make your js more readable. Another option is to look at jTemplates..
How do I check if the mouse is over an element in jQuery? http://stackoverflow.com/questions/1273566/how-do-i-check-if-the-mouse-is-over-an-element-in-jquery cancel the timeout if there is a value in the data. Remove the data on callback of the fadeout. It is actually less expensive to use mouseenter mouseleave because they do not fire for the menu when children mouseover mouseout fire. share improve..
http://stackoverflow.com/questions/14545023/jquery-1-9-browser-detection question You should add a little sanity check to your popstate handler and make sure that it doesn't do anything expensive if you pop into the same state you started in. Then you can not care about the browser and instead just call your popstate..
Detecting when a div's height changes using jQuery http://stackoverflow.com/questions/172821/detecting-when-a-divs-height-changes-using-jquery can take a performance hit. In my experience using this method checking whether the dimensions have changed is less expensive and so you might consider combining the two. Or if you are directly altering the div rather than the div being altered by..
jQuery tabs - getting newly selected index http://stackoverflow.com/questions/185235/jquery-tabs-getting-newly-selected-index a tab it should reload the page entirely the reason for this is that the contents of each tabbed section are somewhat expensive to render so I don't want to just send them all at once and use the normal method of toggling 'display none' to reveal them...
http://stackoverflow.com/questions/2954932/difference-between-jquery-click-bind-live-delegate-trigger-and-on is performance . If you're dealing with lots of elements attaching a click handler directly to each element is expensive and time consuming. In these cases it's more economical to setup a single handler and let bubbling do the work take a look..
Javascript: do an action after user is done scrolling http://stackoverflow.com/questions/4289473/javascript-do-an-action-after-user-is-done-scrolling
How to force advert to show on ajax-loaded page? (Adsense) http://stackoverflow.com/questions/6394594/how-to-force-advert-to-show-on-ajax-loaded-page-adsense manipulate the context e.g. put hidden texts and display non relevant ads to your page you can make google show only expensive ads which usually pay 1 per click well google takes 4 to the advertiser and your context may only show 0.05 ads. Other way..
Clone isn't cloning select values http://stackoverflow.com/questions/742810/clone-isnt-cloning-select-values this ticket in the JQuery bug tracker system which explains the bug and provides a work around. Apparently it is too expensive to clone the select values so they won't fix it. http dev.jquery.com ticket 1294 My use of the clone method was in a generic..
Is binding events in jQuery very expensive, or very inexpensive? http://stackoverflow.com/questions/905883/is-binding-events-in-jquery-very-expensive-or-very-inexpensive binding events in jQuery very expensive or very inexpensive I just wrote a .bind 'event' function and then got concerned that this kind of a call might be very.. binding events in jQuery very expensive or very inexpensive I just wrote a .bind 'event' function and then got concerned that this kind of a call might be very expensive if jQuery.. very inexpensive I just wrote a .bind 'event' function and then got concerned that this kind of a call might be very expensive if jQuery has to run through each element in the DOM to bind this event. Or maybe it's just about as efficient as an event..
Gantt chart in javascript/jquery/extjs [closed] http://stackoverflow.com/questions/9085614/gantt-chart-in-javascript-jquery-extjs tgantt.com. They order that they appear reflect the price. Dojo is free dhmlx has a cheap licence bryntum a more expensive licence and finally tgantt is the more expensive and more complex. I am still evaluating some plugins for jQuery jQuery.Gantt.. the price. Dojo is free dhmlx has a cheap licence bryntum a more expensive licence and finally tgantt is the more expensive and more complex. I am still evaluating some plugins for jQuery jQuery.Gantt can be an option but still need to understand..
|