So i am completely baffled by this and hoping someone can give me some ideas to try. Not sure what details to include so let me know if i dont describe it enough and i'll add more.
We inherited a .Net MVC 4 app from a former company that already has a version on our clients production server. Recently, after a few updates from us, our client noticed that some of the menu items, styling, etc is screwed up on their test and QA servers in IE9 but works on production (Production is still from the previous companies publish). The test and QA versions also work fine in FF and Chrome
Using IETester and IE11, I tried viewing the page in IE9 mode but I did not see the same issues that my client is having, so i tried some older versions out of curiosity. I managed to reproduce the issue, but in IE7 not IE9. I had my client verify that he is in fact using IE9 and he is.
I did a compare with older versions of our _Layout.cshtml and there isnt a single thing that changed other than a favico entry. As far as i can tell, we havent changed any css or styling.
I have a webex meeting with the client tomorrow to look at his IE to see if i can find anything, but can anyone give me some ideas of what could cause this? Particularly that this page works in my IE9 but not his?
sometimes when you set the default browser mode to be ie7 and the document mode to be ie9 standard and you try again to change the browser mode to be ie9 compat view then unfortunately the browser version will be detected as ie7 , the solution for this problem is to change the browser mode to be ie9 but not ie9 compat view then the browser version will be detected as ie9
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I have a general question. I'm working on my first program in JavaScript and while I'm working on them I experienced some weird "broken browser"-problems.
During the weeks of work on my program I tested the project often on different browsers and computer systems. While doing it I observed weird behavior on Firefox and Chrome in specific versions. In both cases the program worked fine in both browsers then suddenly I experienced problems in Firefox on Windows on one machine. After some research I tried to update the browser and the problem was gone. The same experience I had on Chrome on Linux. It worked fine, then suddenly I had problems with Chrome 48. I tested the program on Mac and Windows, everything was fine. Then I recognized that the browsers on this machines has the version 54. So I updated on my Linux machine to the newest version and the problem was gone.
My Question: is it normal that such things happen with specific versions of browsers and if so, how to deal with it if you're working on bigger projects?
Edit: From the answers below I see that I was not clear with my question. The Question is not really about cross-browser compatibility than more about why a programm works in chrome v47, but not in v48, and then it works again in v54. Same for Firefox and other browsers.
You have to read about cross-browser compatibility.
Each browser may have different implemenations of specific functions or even do not have.
For older browsers like IE8 and less even simple window.innerWidth
doesn't work.
jQuery may help you. Its library which effectively provides cross browser compatibility for a lot of cases.
Another way to test if browser support some function is using Modernizr
You can also check support manually by websites like caniuse.com - works mainly for css styles but also js
I am developing a web page primarily using Firefox. Often I encounter that my web page renders properly in Firefox but has some unexpected behavior in Chrome and IE.
Generally if its related to javascript, I usually open Developer Console in Chrome and see if there were any errors and that gives me a clue as to what might be wrong.
Unfortunately, I am generally lost if its a CSS related or HTML element issue.
In one particular case, I have placed a div inside a <td> and I am lost as to why the chrome cannot render it properly irrespective of the fact that firefox is happy and does not complain.
So my question is, how to debug issues related to rendering of HTML pages in Chrome and CSS and determine what might be offending.
My related question is, is there a guidelines to make my web page work in almost all the popular browsers with little effort? I am particularly thinking in terms of tool or process which will warn me of compatibility issues with my web page.
IE (Internet Explorer) and little effort doesn't match to each other, you have to invest more of your time and effort only for IE, illuminate IE and be happy, as a suggestion, use Twitter Bootstrap if possible, it's a ready and tested css framework (maybe framework is not perfect name).
Basically, as far as I know, only a css reset could be used to gain some consistency but still you have to test over different browsers because each has different rendering engine. If you want to keep IE in the list then test the layout for IE at first.
Only for the IE or Inconsistent Exposer (IMO) there is a developer tool available (IE Tester) to test layout (HTML/CSS) over different versions of IE and only works on Windows so it may help you a bit if you are Windows user. There is also an online tester available and sometimes helpful, it's browsershots.org.
Also IE has a debugger/developer tool and pressing F12 will bring it so you may see something like this:
Google Chrome has it's built in debugger/inspector (CTRL + SHIFT + I) and on Firefox you may use Firebug extension and these browsers are not dumb like IE and there are lots of debugging extensions available for these browsers for free, not worried about these good guys.
Generally speaking, IE users are dumb and used to see dumb things on their screen so I don't think too much about them because they really don't know the difference but as a developer you may need to think about it and in this case I would demand extra charge from my clients if they want me to make a site compatible for IE < 10 because it requires extra effort.
You dunno me ? Leh--hoo-zehar (Looser) IE am a legendhhh. Smooky...!
I am not aware of any tool that will warn you because there is no way for a tool to validate the result of what you desire.
As far as how to test HTML/CSS. Chrome supports the most HTML-5 and FF is a close second. If you develop in chrome it normally works in FF and via verse. IE is where the pain is. IE does not support all HTML tags and often will render things wonky. I normally create my webpage and focus on FF and chrome once I like the results I open IE and debug. 98% of the time it is CSS changes that need to be made. I debug CSS first and if I am not able to resolve it with CSS after a decent amount of work I will look into changing the HTML. I try to avoid changing HTML because you have to debug all other browsers again.
Styles and code developed in Chrome will generally work in Safari, Opera(same engine), and IE 10+ with few inconsistencies. You'll get a few rare positioning issues with some CSS3 specs in Firefox, specifically in background positioning. You'll also find some javascript issues unique to Firefox.
IE9 is generally a good sport and usually doesn't have too many issues. IE8 will have a few and they'll be significantly different based on the OS (as there are multiple versions of each IE and they all support different specs for Javascript and HTML) specifically you'll find lots of issues with XP IE8 and really shouldn't support it (Microsoft doesn't even want to).
For the most part you'll be developing to IE inconsistencies unless it's a CSS3 spec with the occasional javascript strangeness (which js frameworks generally can help with since a few of them were made with that goal in mind).
As far as tools, browserstack is nice but doesn't give you a lot of time. If what you're trying to use is modern caniuse is a good place to visit first. Almost all issues between non-IE browsers will be HTML5 or CSS3 specific though.
My site is http://www.ancientwords.us. I've tried every Javascript troubleshooting tool in the book, but I can't see to figure out why the site isn't loading in IE 8 (or IE7 for that matter).
When using IE10 in IE8 mode, I get a notification that there is a non-responding script, hence why I think it is a Javascript related error. Even still, I haven't been able to find a tool that has been able to tell me what's wrong.
I've tested the site in Safari, FireFox, and Chrome and everything works fine. The site also works fine in IE9 and IE10.
Does anyone have any advice?
Turns out Cloudflare was causing the problem. The Rocket Loader feature is not compatible with older versions of IE.
Did you report the Rocket Loader bug to us?
I spent a long time adding a lot of Javascript to our front-end. I did this all the while using FF (11.0). I just committed all the changes (which work fine on my local sandbox) to our dev server, and a QA tester noticed that an entire div is missing when viewing the page in IE 8.
This div does all sorts of fancy stuff with jQuery, allowing users to expand/collapse accordion panels, and drag-drop images from expanded accordions, etc.
It is 10 PM and I can't go to bed until I fix this break. I have tried using the IE Dev Toolbar that ships with IE (and is accessed via the F12 button), hoping it would catch some bad Javascript but nodda. Same for Firebug. The JS looks perfectly fine, it's just IE being stubborn.
What steps would SO take to start figuring out why IE won't display my jQuery-heavy div? It's really not as simple as backing out the changes one by one, because my code sprinkled and interwove functions and calls all over the JS page. Thanks in advance for any pointers or nudges in the right direction.
F12 Developer Tools
The F12 Developer Tools, when used properly, are generally speaking more than capable of finding odd problems throughout your code. You can audit your application to find long-running processes, add breakpoints and watch variables through the life-cycle of your page.
IE Compat Inspector(s)
Another great tool is the IE Compat Inspector, which will examine your code and look for any types of patterns or usage that might break your site in Internet Explorer. You can find this online at http://blogs.msdn.com/b/ie/archive/2011/04/27/ie9-compat-inspector.aspx for Internet Explorer 9, and http://blogs.msdn.com/b/ie/archive/2012/01/20/ie10-compat-inspector.aspx for Internet Explorer 10.
ECMAScript Compat Charts & Polyfills
Often times we mix up what features are supported by which browsers. It helps to keep a good compat chart handy, so you know if classList is supported in IE or not. If and when you discover that something isn't implemented in Internet Explorer, it's time to find a polyfill. Fortunately, there are many.
Web Debugging Proxies
These are just a few tools that you can use to trouble-shoot your site in Internet Explorer. Lastly is Fiddler 2 (a web-debugging proxy), which permits you to stand in between the client and server, tampering with data as it goes both ways. I typically use this to serve up custom files in the place of live server files when I'm debugging scripts. However, if you've got direct access to the server presently, this isn't all that necessary.
I am getting a very weird kind of error with IE9. When I use a DOMParser from within a jsp page on localhost, it runs perfectly fine and gives the proper result.
But Shockingly, when I use DOMParser inside a normal HTML file (Not on the server. From the file system), I get this annoying message of "DOMParser is undefined" .. What is this and how can I make it work? Thank You.
P.S. It works fine on FF and Chrome
I would say that this is almost certain to be the browser running in compatibility mode when browsing local URLs.
You can check this by opening the dev tools (press F12) and looking in the top right corner; if it says it's in IE7 mode, then you've found the problem. Switch it back to normal IE9 mode and it should come right.
IE7 didn't support the DomParser object, so if IE9 is in IE7 compatibility mode, it's natural that it will stop supporting it too.
Ok, so that's what it's doing. But why is it doing this? There is a config setting in IE (both IE8 and IE9) which specifies that the browser should fall into compatibility mode when browsing sites on the local intranet. The reason for this setting existing is to allow companies who have internal sites designed for older versions of IE to upgrade to a new version without breaking those sites. It's intended to make like easier for corporate types who would rather not spend money fixing something when the broken version is good enough.
But it's a pain in the rear for the rest of us.
Obviously, if your site is on the public internet, it won't be affected by this flag, except when you're trying to work on it from localhost on your own PC. Therefore, the solution for you is to simply turn off this config setting in the browser and forget about it.
Of course, the fact remains that users of IE7 will still have this problem with your site, as their browser doesn't support the feature you're using. You could just drop support for IE7, and tell those users to upgrade. But if you want to support IE7 users, I believe that Dean Edwards' IE7.js script allows the browser to emulate this feature (along with a bunch of other stuff that Microsoft forgot).
Hope that helps.
I received this error, "DOMParser is undefined", on IE9 and it turned out to be an add-on that was disabled.
Name XML DOM Document
Publisher Microsoft Corporation
Status Enabled
Tools – Manage Add-ons – Microsoft Corporation