I've run into an issue that crops up when I make a change to a Drupal site - www.productworld.com
This is how the problem crops up:
Make a change to site, e.g. add javascript tracking code or adding a new static webpage.
When NOT logged in as admin (viewing the site as a regular visitor), the homepage is now screwed up. It appears that the CSS and JavaScript for the homepage aren't loaded. When logged in as an admin, I see a cached version of the site, looking as it should. I use two separate browsers to confirm the problem - one where I'm logged in as Drupal admin in Chrome, and two where I view the site in Firefox as a non-logged in site visitor.
Here's some screenshots of what the site looks like when the problem crops up:
http://imgur.com/xs3hF
http://imgur.com/wMBVq
http://imgur.com/Gksb9
http://imgur.com/eZPTE
Note: the company images that you see (iWatt, Roal, Assa Abloy etc) should be in a nodequeue (a jQuery image slideshow), but instead they appear one after the other. The blue box with the gold call to action appears way down the page. This is what leads me to believe that the CSS and JS isn't loading.
3.Clearing the Drupal cache fixes the issue.
It's obviously highly undesirable to have a site that gets screwed up everytime a simple change is made to it.
If anyone has run into a similar issue, please let me know.
Thanks.
When you make changes to the site with caching enabled it will cause problems. This is because it will be using some cached copies of earlier files.
I tend to make changes to a development version of the site, then roll them out to the live site and clear the cache.
Related
For some time I'm trying to develop my own app using cordova. The first page I created is the login. When the user clicks on the submit button I check the credentials by sending them using ajax. Meanwhile I want to display a loading animation,and I found how to do it:
$.mobile.loading('show')
It works..almost. It only shows a black circle on the middle of the screen. I checked the console only to find :
Failed to load resource
ajax-loader.gif (0,0)
I ran multiple test: I commented the security policy,copied the image in different folders,checked the spelling and finally created my own span with url(images/ajax-loader.gif) and ..it worked. Then I did the same thing with the original loader(I found its span in the DOM explorer) and added an inline style url(images/ajax-loader.gif)..it worked!
Finally I realised this:
It is like it tries to load the same image from two different sources. How can I fix it?
Other details:Jquery 2.0.0/Jquery-mobile 1.4.5
This is some weird behaviour still not explained-so ANYONE can post the correct reason/explanation for this- but I will post the fix.
I took a look at this post and thought to give it a try.
This is how the css looks like(I edited it in debug mode so it should be overridden) :background: url(.././images/ajax-loader.gif)
Now it works but the question IS still active.
I have designed a website using Wordpress and caching it with W3 Total Cache. I have experience with them both but I encountered the next problem.
The website http://atelieruldigital.com is a one page website, with another page for the partners of the program (http://atelieruldigital.com/parteneri/). When I access the partner page, everything loads as it should. When I access the main page by clicking "Acasă" or the logo, I have the next behaviors:
Google Chrome: everything loads as it should;
Mozilla Firefox: the scripts have lots of errors in the console and the page loads broken. I have to refresh (F5) to make it work as intended;
Microsoft Edge: the same problem as Mozilla.
I am using manually minifying, only by combining the scripts, excepting the mobile-menu.js, which grants error when I try to combine it. I do not use page caching, only object and browser caching. The theme is a custom theme, based on Twenty Sixteen.
If I disable the caching plugin, everything works as intended. But I need it to help the page load faster.
I have found the solution after a couple of days of debugging. It seems like when manually combining the .js files, I had to switch around some in the load order.
I have been fixing up a sites JS, moving it to the bottom, minifying, etc. And it's all gone okay except on the blog (of an e-commerce site), as the page loads it's causing the header to be un-styled for a second or so, but it isn't happening on any other part of the site, even though they share the same CSS/JS. The blog is image heavy, but with images disabled (and I've tried disabling scripts too), it still happens. It's only happened since I've made changes, which I can't revert simply, but the changes are all positive and should help if anything. I can't see any JS causing it (as I removed the scripts to see if it was in there) and it doesn't happen in FF.
I would share a link but it's behind a closed staging server. And I could provide code but I'm not sure what, and there's a lot.
So, I had hoped I could use Dev tools to figure out what's happening, possibly the timeline view or something. I just don't know how I'd go about doing that.
Any advice?
Ed: I used the network tab on both the staging and the live site, as you can see from the image, they're identical, the css is the first thing loaded after the actual page, and on the live site it's actually ga.js. So it's even more of a puzzle now...
Don't worry, figured it out... It was the Stylebot Chrome Extension.. No idea why it was causing it now after making those changes though, and why it didn't affect the live site. I had no styles defined in it for this domain. A bug I guess.
Cheers all the same :)
Timeline tab in the dev tools is for benchmarking / site performance testing. If you want to know what's happening as in what content is being loaded, when and where, you can use the network tab for that.
It's also a common practice to stuff console.log() everywhere with some relevant message so you know when some part of code is being run.
I have a website where sometimes it loads quickly, however sometimes it seems as though the page has stopped loading half way through, possibly due to a script.
The website is http://www.pinspired.com - The tabbed sidebar on the right is the problem. I am using a simple jquery tab plugin and twitter and facebook script in the tabs.
Firstly, does the page load quickly for you?
How can I find out which script is stopping the rest of the page loading. It is hard to test as it only happens occasionally.
Thanks in advance.
I just ran the dev tools and it looked like the jquery.carousel plugin is what took the longest.
That aside, my feeling is that you should reconsider using an iframe to load in the carousel. I do know that multiple iframes on a page can slow the page down. And considering the size of the content you are loading inside that iframe, it might explain the delay. You might want to do some research on iframes and consider the order in which iframes are loaded into the DOM.
Your site's loading fine here.
For the Facebook "Like Box", consider using the iframe version.
http://developers.facebook.com/docs/reference/plugins/like-box/
After clicking the "Get Code" button, select "IFRAME". This may remedy your issue.
I suggest you have a look at the chrome developer tools. You can see how long it takes to load each resource (87 request just to load the landing page - wow!), you can profile scripts to see if something takes very/too long and you can even do an audit and let it check several things you can possibly optimize.
For example
merge the javascripts you are loading from the same domain
set the webserver to use gzip to send script/html files compressed
many resources are explicitly set to be not cachable; for example all the product images and the social media pins (preventing that they are loaded over and over again and will speed up things a lot after the they first page load)
merging images like the social media pins and use css sprites
provide different/only the needed css scripts for each site; according to chrome almost 300kb of css rules are unused on the frontpage
You can find out all that stuff usign the Chrome Developer Tools. All you need is Chromium/Google Chrome.
If it is really the facebook script couldn't you just add a slight delay before loading the fb plugin? Like 500 - 1000ms or so after everything else (well most of it) is loaded.
EDIT: The answer drewcode posted is right. It looks like jquery.jcarousel is causing the delay. See here:
I created a mobile site in html and jquery, but it is not loading properly in Chrome (or on an iphone). There is no backend to the site - all changes to content would happen right through editing the html. Inside of my html, I made no specific reference to ajax. And, each page links through "#pageid. The problem is that as I navigate the site, various pages do not display correctly unless I hit "refresh." URL is mobile.shorelinelake.com. I am VERY new to this, so please be patient with a newbie :) Thanks for any help!
http://mobile.shorelinelake.com (if you click through to "Lake" and then "Sailing," or "Cafe" to "Menu," you can see the problem - the page jumps after loading, cuts off the header, places content below the footer, or will entirely hide jquery elements...)
One thing I noticed right away is that your using an old version of Jquery and Jquery Mobile. There have been alot of improvements since the alpha that you are using. Also you are linking to a few files that aren't there. Phonegap.js and ajax-loader.gif for some reason are not found. In my console I see 196 warnings that I believe are all related to you using old versions.
Also you have 31 html errors. One example is here
line 88:
<a href="tel:16509657474" div data-role="button" data-theme="c" class="ui-btn-text">
You have alot of stranded </p> tags. Most of them are in the menu page. Fixing these errors is necessary to troubleshoot your problem. Try running your document through an html5 validator to find these mistakes.
I also recommend breaking this into smaller pieces. Here is my reasoning:
Easier to maintain and edit.
Keep the dom size reasonable. Jquery will remove the old pages from the dom keeping it very manageable.
Faster page loading resulting in a better user experience. Your user will probably not be going to each page. Only load what they need to see.
Bandwidth could be costing your user extra money on a mobile device.