Maybe this question about performance should be ask in jQuery Dev Group. :D
On Thu, Mar 26, 2009 at 10:36, Samuel <samuel.yh...@gmail.com> wrote:
> Hope get your helps.
>
> On Thu, Mar 26, 2009 at 1:14 AM, Samuel <samuel.yh...@gmail.com> wrote:
>
>> supplement more information on the issue.
>>
>> $('.words') have html data, ie, this node is not empty, so it must cost
>> some time to remove the children.
>>
>> I made tens of tests, and the average of data() function time is around
>> 500ms, which must be too high.
>>
>> It's possible for me to use a iframe to process this if load() usually
>> consume so much time. the iframe costs around 120ms, which time for
>> ajax(get) in jquery is around 100ms. so only another 20ms used for redering
>> css in iframe without js codes added, which might cost a little more loading
>> and examining time.
>>
>> I need to treat the time as a very critical factor, so there is no
>> negotiation on the time.
>>
>> Any suggestion on how to improve the speed is hugely expected, but your
>> suggestions are iframe are also strikingly hoped.
>>
>> Thanks again.
>>
>>
>>
>> On Thu, Mar 26, 2009 at 12:42 AM, Samuel <samuel.yh...@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> recently I changed my ajax returned content format to html pieces, using
>>> a load() function with an expect of time decreasing used for dom
>>> manipulation.
>>> On the contract, it could be even longer than the previous xml processing
>>> time.
>>>
>>> After a debugging with firebug, I found the function data() consumes most
>>> of time, 90% of the total one. Here's a quick illustration:
>>>
>>> data()16585.59%457.185ms457.185ms 2.771ms0.007ms11.215msjquery.js (line
>>> 658)ajax() 12.86%15.267ms17.361ms17.361ms17.361ms17.361msjquery.js (line
>>> 2583) fix()11.89%10.122ms10.122ms10.122ms10.122ms 10.122msjquery.js
>>> (line 2092)merge() 291.6%8.554ms8.554ms0.295ms0.003ms6.079msjquery.js
>>> (line 1155) classFilter()61.5%8.008ms8.008ms1.335ms 0.012ms4.04msjquery.js
>>> (line 1657)remove() 30.85%4.524ms451.542ms150.514ms7.582ms332.348msjquery.js
>>> (line 1310) remove()710.8%4.268ms428.967ms6.042ms 6.166ms7.32msjquery.js
>>> (line 1908)(?)() 20.68%3.633ms4.378ms2.189ms0.116ms4.262msjquery.js
>>> (line 947) find()140.52%2.751ms19.985ms1.428ms0.14ms 10.527msjquery.js
>>> (line 1464)append() 50.35%1.843ms1.843ms0.369ms0.04ms1.186msjquery.js
>>> (line 237) removeData()1060.34%1.793ms1.793ms0.017ms 0.011ms0.318msjquery.js
>>> (line 684)init() 580.32%1.711ms24.058ms0.415ms0ms10.864ms
>>> data() function consumed as much as 85% of time, strikingly beyond of my
>>> expectation which should be less than 100ms.
>>>
>>> some code:
>>>
>>>
>>> renderLearning=function(nextUrl,node) {
>>>
>>> $('.words').load(nextUrl,function () {
>>>
>>> var word=$('#words h1').text();
>>> $('#next_word').click(function () {
>>> renderLearning($('#next_word').attr('href'));
>>> return false;
>>> })
>>> $('#prev_word').click(function () {
>>> renderLearning($('#prev_word').attr('href'));
>>> return false;
>>> })
>>> })
>>> }
>>>
>>> your helps are highly appreciated. Thanks very much.
>>>
>>> Regards,
>>> --
>>> Samuel(吴焱红)
>>> Blog:http://wuyanhong.blogspot.com
>>>
>>
>>
>>
>> --
>> Samuel(吴焱红)
>> Blog:http://wuyanhong.blogspot.com
>>
>
>
>
> --
> Samuel(吴焱红)
> Blog:http://wuyanhong.blogspot.com
>
