I've got the following site that loads great in FF and Chrome (no surprise), but is terribly slow in IE7. It's even quick in IE6, but not 7. Here's the site code...
Now I'm using JQuery in a couple places, but it's by no means nothing crazy. The page is fairly simple.
I thought of preloading the main content images, but even after they are loaded in the cycle, the loading time is still slow.
I have a JS file on site A which reads a few parameters from a short text file on site B. The call is made through code...
Any ideas on how to speed this up, either by bypassing DNS (but without exposing username) or by offering another way of reading data across sites?
I put a javascript for a preload in it and it hasnt helped the front page. Right now the header is swish and we took that out and it still took over 2 minutes to download on DSL. I do have the JS anthology book but the script in there didn't work for us. Come to think of it I have almost all of the sitepoint books. Does anyone have any suggestions.
View 3 Replies View RelatedIs there a script to detect the internet connection speed of the visitor of the website in order to determine if the HTML or the flash content of the site wil be published. This to prevent the visitors to struggle with large flash files en give them the best possible experience. On the other hand to satisfy the need of the fast speed connection owner to get a rich internet experience and to brand my products with trendy content.
View 2 Replies View RelatedOn our website we wanna bind a click (or maybe mouseover)-event on every user-image. The click on the image should open a layer with further information about the user. Now i look for a best practice way to solve this (focus on performance), because there could be a lot of user-images on one side. I think, if i bind the event on a class like this
jQuery('.myclass').bind('click', function(
makerequest;
openlayer;
))
that could slow down the site, because i read, that "The class selector is the slowest selector in jQuery". Back to the roots and insert an onclick(function) to the element, but i'm not realy happy with that solution.
I am about to launch a SharePoint site with thousands of users accessing the site from a very, very slow network. Two questions. Is there a way to 'install' jquery so that it doesn't download every time they access the site?
_All_ users are on the same domain and are using IE7. Once they download JQuery on the initial page visit, does it still redownload the file every time they access the site? Temporary internet files don't get cleared after each session, so I'm assuming it doesn't get re-downloaded.
I would like to design a page that measures the user's download
connection. Does anyone have an example link or script that might aid
me in this task?
anyway to check connection speed?
View 3 Replies View RelatedIn the Yahoo! UI event.js file I see the following quite a bit
for (var i=0,len=unloadListeners.length; i<len; ++i) {
when I always just write
for (var i=0; i<unloadListeners.length; ++i) {
Is it worth it to declare the variable len to save time evaluating
unloadListeners.length?
Ive been having a problem of late with one of my sites that uses PHP5 /
Ajax. The problem is that periodically the ajax functions lock up and it
gets stuck in the loading phase of the request. If i restart the apache
server everything goes back to normal (i assume it severs the connection
to the ajax called function).
I think this is a problem with the javascript part as i have tried it
using a straight post request and have have no problems and slow loading
time is localized to the one user (ie. still works fine on the other
computers on my office network).
I have recorded this happening in Firefox, safari and IE6 & 7
My server is running debian with apache2 and php5
Just wondering if somebody can shed some light on what my problem may be? Code:
I read somewhere that putting Javascript code after CSS code on webpages makes them feel like they load faster. I was wondering if any of you has any experience with this and if you do follow this rule in your projects.
View 5 Replies View RelatedJust wondering if anyone knew if there was a definite speed advantage to VBScipt as opposed to JavaScript?
View 7 Replies View RelatedWhy does the speed not permanently change?
<SCRIPT>
<!--
function ScrollMarquee(speed) {
var speednow = "";
speednow = speed;
window.setTimeout('ScrollMarquee('+speednow+')',speednow);
[Code]...
I wonder javascript execution speed depends on what ?
Meanwhile, if a flash slide show vs flash-like javascript slide show, which one will win due to download speed and execution speed?
I have to move 2 layers (one from up to center and one from bottom to
center) and I found this way:
<div id="up" style="position:absolute;left:10px;top:-20px">Up</div>
<div id="down" style="position:absolute;left:10px;top:200px">Down</div>
function movediv(){
var u = document.getElementById("up")
var d = document.getElementById("down")
u.style.top = "100px";
d.style.top = "100px";
}
It doesn' work...because:
1) They don't move at "the same time"...I would like to obtain
simultaneous move.
2) I can't control speed so moving is invisible!
I'm using the following to allow dynamic resixing of an image (when the usre
presses down on a button):
function widthup() {
image.width = image.width + 1;
width.innerText = image.width;
if(x==1) {
setTimeout('widthup()',0);
}
}
even when the 'setTimout' is at zero it goes pretty slowly. Any way to have
something faster?
It's possible to set custom speed for each pic or for some pics?and How remove the frame
View 4 Replies View RelatedI am new at this jquery stuff. In fact, I'm more of a cut and paste kind of gal I have a web page that I incorporated a slideshow. The picture seems to change a bit faster than I'd like, and I can't seem to make the picture go slower than it already is. Can anyone tell me what value I need to change to accomplish this? I changed a couple numbers, but didn't seem to have an affect. Also, is there a way to add a pause and play button so if the fading picture bothers someone, they can pause it?
[Code]...
Suppose I want to populate a drop down ajaxly. The population is written like:
var $select = $("#target");
$.each(datas, function(){
$("<option/>")
.val(thia.value).html(this.name)
.appendTo($select)
.data('srcData', this);
});
But the speed is considerably slow when the datas is large. I know that I can use just string concatenation and html() finally to speed it up but what can I do with the data()?
I'm trying to create a button that will increase and decrease the var speed variable
ex:
I'm justing wondering about the behavior of JS in regards to adding elements, suppose I have something like this:
I'm just wondering at the point I hit that "// DO SOMETHING WITH ONE OF THESE DIVS", are all the divs I have added in the DOM available to access?
I ask because I have some code at work in which a tester is reporting an error that happens which I can't reproduce, and they and others have had it a few times.
The only way I can explain it in my mind is if the div is not available to me at the time of execution. So I'm just looking to rule it out or confirm my hunch.
Is document.getElementById("myDiv").appendChild(obj); synchronous and the next line of code wont execute until the DOM is ready or is it in fact a asynchronous call and therefore adding alot of elements to the DOM could result in a lag so some divs or not available straight away.
In the home page (index.html) i have a flash intro. The first time a user sees the website, the intro should play. Once he goes to another page (about_us or contact_us) and comes back to the home page, it should show a different swf (the version without the intro) - i have created two swf files. I need to know how to change them when the user has already seen the intro or was in the home page before. When i googled, i found something on cookies. I have no clue on how to set them and change the swf file.
View 1 Replies View RelatedI''m looking to develop a web app where there will be extensive Ajax queries, array manipulations and loading of tables on pages.. What are the best software programs or technologies out the fore maximizing the processing of these queries? ? i remember i once heard about some technology called PURE that let you transfer AJAX JSON responses directly into HTML to maximize speed.
Are there any good programs like that people know of ( or a better alternative to PURE if pure is no good i literally know nothing about it ) that can work well with jQuery, or can jQuery achieve better speeds somehow?
I have pasted below java script code:
Automatic detect default page and check to low band version go to html page or high band version go to flash page.
We're developing an ASP.NET / C# intranet application. All users use
Internet Explorer 6.0 and JavaScript is always enabled.
In a HTML table, we use an onclick event on each tablerow and in that
onclick event (javascript) we save some values in hidden fields.
Most of the time, this works very fast, but it also happens a lot of
times that the internet browser respons very slow or gets stuck. We
really don't know what causes this, because in the javascript we do only
simple things such as setting values in hidden fields.
Is there anyone who recognizes this problem and knows some possible
solutions?
Images are cached by the browser depending on the headers sent by
the server. If the server does not send sufficient information
for the browser to decide the image is cacheable, the browser
will check if the image has been updated every time you change the
src of an image (in some user settings). To overcome this you
must send suitable headers.
