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2014/10/16 ¤W¤È 12:03:17
jquery Programming Glossary: expandoAre jQuery's :first and :eq(0) selectors functionally equivalent? http://stackoverflow.com/questions/1234087/are-jquerys-first-and-eq0-selectors-functionally-equivalent an adverse effect on performance as jQuery makes use of an expando property for caching purposes. However it would be interesting..
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal doing Compute a unique ID for the element if id id elem expando uuid Oh. So it's adding one of jQuery's uuid to data lookup.. is pretty questionable stuff. The whole thing with the expando and what jQuery does to innerHTML via regex to prevent that..
How does jQuery store data with .data()? http://stackoverflow.com/questions/2446098/how-does-jquery-store-data-with-data stores data with .data functions. Is this something called expando Or is this using HTML5 Web Storage although I think this is.. and therefore from memory leaks. As I read about expando it seems to have a risk of memory leak. Unfortunately my skills.. to answer the first part of your question. Neither is it expando nor HTML5 WebStorage. To correct myself I think jQuery does..
jQuery attribute auto added to elements http://stackoverflow.com/questions/2760714/jquery-attribute-auto-added-to-elements is doing. To summarize jQuery has a variable called 'expando' which is 'jQuery' new Date jQuery has another variable called.. Getting any data on a HTML Element Object will use the expando property on the object to store a reference into jQuery.cache.. the elements cache id or create a new cache id var id elem expando elem expando uuid get the cache for the element or create it..
http://stackoverflow.com/questions/6063874/api-design-and-jquery memory leaks in IE. Instead it places a lightweight expando property which maps to an entry in jQuery.cache which holds.. between the element s and the jQuery.cache is that expando. Why is that a big deal Well philosophically jQuery is not a.. and other data associated with those elements via the expando creating a nice and fully cross browser memory leak. So for..
Why does my FORM element have a random JQuery attribute? http://stackoverflow.com/questions/7150592/why-does-my-form-element-have-a-random-jquery-attribute share improve this question That's the uuid jQuery.expando that jQuery adds to every DOM element it interacts with to work.. the uuid . The weird attribute name is the value of jQuery.expando which you can search for easily in the code and see it's set.. eliminating this feature. Modify the code to set jQuery.expando to some hard coded value like 'jquery' instead of a random number..
Are jQuery's :first and :eq(0) selectors functionally equivalent? http://stackoverflow.com/questions/1234087/are-jquerys-first-and-eq0-selectors-functionally-equivalent element with jQuery in a for loop won't necessarily have an adverse effect on performance as jQuery makes use of an expando property for caching purposes. However it would be interesting to see how get 0 compares with DOM element access and how..
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal if there are any events attached to the element. What is data doing Compute a unique ID for the element if id id elem expando uuid Oh. So it's adding one of jQuery's uuid to data lookup entry hack properties for every element it even tries to read.. what should be a trivially simple operation... some of which is pretty questionable stuff. The whole thing with the expando and what jQuery does to innerHTML via regex to prevent that showing as an attribute in IE is just broken and ugly. And the..
How does jQuery store data with .data()? http://stackoverflow.com/questions/2446098/how-does-jquery-store-data-with-data store data with .data I am a little confused how jQuery stores data with .data functions. Is this something called expando Or is this using HTML5 Web Storage although I think this is very unlikely The documentation says The .data method allows.. type to DOM elements in a way that is safe from circular references and therefore from memory leaks. As I read about expando it seems to have a risk of memory leak. Unfortunately my skills are not enough to read and understand jQuery code itself.. to make it work and keep all the associations right. Oh and to answer the first part of your question. Neither is it expando nor HTML5 WebStorage. To correct myself I think jQuery does use expando in one occasion. It sets one attribute on those..
jQuery attribute auto added to elements http://stackoverflow.com/questions/2760714/jquery-attribute-auto-added-to-elements is pretty easy to read and you can look at what the data function is doing. To summarize jQuery has a variable called 'expando' which is 'jQuery' new Date jQuery has another variable called uuid which starts with 1 jQuery.cache is an empty object.. which starts with 1 jQuery.cache is an empty object Setting Getting any data on a HTML Element Object will use the expando property on the object to store a reference into jQuery.cache sort of like this get the elements cache id or create a new.. store a reference into jQuery.cache sort of like this get the elements cache id or create a new cache id var id elem expando elem expando uuid get the cache for the element or create it var data jQuery.cache id jQuery.cache id Event Handlers are..
http://stackoverflow.com/questions/6063874/api-design-and-jquery on event properties that can close around other elements creating memory leaks in IE. Instead it places a lightweight expando property which maps to an entry in jQuery.cache which holds handlers and other data. I believe it then attaches a handler.. system is doesn't really matter. The point is that the connection between the element s and the jQuery.cache is that expando. Why is that a big deal Well philosophically jQuery is not a framework it is a library. It would seem that as a library.. when removing elements from the DOM you've orphaned any handlers and other data associated with those elements via the expando creating a nice and fully cross browser memory leak. So for example something as simple as el.innerHTML '' could be very..
Why does my FORM element have a random JQuery attribute? http://stackoverflow.com/questions/7150592/why-does-my-form-element-have-a-random-jquery-attribute is specific to IE or JQuery. jquery html internet explorer share improve this question That's the uuid jQuery.expando that jQuery adds to every DOM element it interacts with to work around browser memory leaks. Older style code waited for.. a hashmap in Javascript of tags and numbers which it calls the uuid . The weird attribute name is the value of jQuery.expando which you can search for easily in the code and see it's set to a random value each time. This is done to allow multiple.. functionality either you could easily resolve this by just eliminating this feature. Modify the code to set jQuery.expando to some hard coded value like 'jquery' instead of a random number and you're good to go. Be careful not to ever use jQuery..
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