It might not be your fault — if a bug exists in a browser, then hopefully the vendor will rapidly fix it. It might have already been fixed — for example if a bug is present in Firefox release 49, but it is no longer there in Firefox Nightly version 52 , then they have fixed it.
If it is not fixed, then you may want to file a bug see Reporting bugs , below. If it is your fault, you need to fix it! Troubleshooting JavaScript. Once you've discovered what is causing your bug, you need to decide how to work around it in the particular browser it is causing problems in — you can't just change the problem code outright, as this may break the code in other browsers.
The general approach is usually to fork the code in some way, for example use JavaScript feature detection code to detect situations in which a problem feature doesn't work, and run some different code in those cases that does work.
Once a fix has been made, you'll want to repeat your testing process to make sure your fix is working OK, and hasn't caused the site to break in other places or in other browsers. Just to reiterate on what was said above, if you discover bugs in browsers, you should report them:.
This article should have given you a high-level understanding of the most important concepts you need to know about cross browser testing. Armed with this knowledge, you are now ready to move on and start learning about Cross browser testing strategies.
Skip to main content Skip to search Skip to select language Learn web development Tools and testing Cross browser testing Introduction to cross browser testing Change language. Overview: Cross browser testing Next This article starts the module off by providing an overview of the topic of cross browser testing, answering questions such as "what is cross browser testing?
Objective: To gain an understanding of the high-level concepts involved in cross browser testing. You need to think about: Different browsers other than the one or two that you use regularly on your devices, including slightly older browsers that some people might still be using, which don't support all the latest, shiniest CSS and JavaScript features. Different devices with different capabilities, from the latest greatest tablets and smartphones, through smart TVs, right down to cheap tablets and even older feature phones that may run browsers with limited capabilities.
People with disabilities, who use the Web with the aid of assistive technologies like screenreaders, or don't use a mouse some people use only the keyboard. Note: We'll cover defensive coding later in the module too. Cross browser issues commonly occur because: sometimes browsers have bugs, or implement features differently. This situation is a lot less bad than it used to be; back when IE4 and Netscape 4 were competing to be the dominant browser in the s, browser companies deliberately implemented things differently to each other to try to gain competitive advantage, which made life hell for developers.
Browsers are much better at following standards these days, but differences and bugs still creep through sometimes. This is inevitable when you are dealing with bleeding edge features that browsers are just getting round to implementing, or if you have to support really old browsers that are no longer being developed, which may have been frozen i. As an example, if you want to use cutting edge JavaScript features in your site, they might not work in older browsers.
If you need to support older browsers, you might have to not use those, or convert your code to old fashioned syntax using some kind of cross-compiler where needed. For example, if a site has been designed to look nice on a desktop PC, it will probably look tiny and be hard to read on a mobile device. If your site includes a load of big animations, it might be OK on a high spec tablet, but might be sluggish or jerky on a low end device.
In later articles, we'll explore common cross browser problems, and look at solutions to those. You should compile a list of the potential problem areas. There are multiple general strategies to cross browser development, for example: Get all the functionality working as closely as possible in all target browsers.
This may involve writing different code paths that reproduce functionality in different ways aimed at different browsers, or using a Polyfill to mimic any missing support using JavaScript or other technologies, or using a library that allows you to write a single bit of code and then does different things in the background depending on what the browser supports. Accept that some things aren't going to work the same on all browsers, and provide different acceptable solutions in browsers that don't support the full functionality.
Sometimes this is inevitable due to device constraints — a cinema widescreen isn't going to give the same visual experience as a 4" mobile screen, regardless of how you program your site. Accept that your site just isn't going to work in some older browsers, and move on.
Do some lo-fi accessibility testing, such as trying to use your site with only the keyboard, or using your site via a screen reader to see if it is navigable. The service checks through more than 1, desktop and mobile browsers. You can set automatic testing after a specified period. Sign up for a free account and confirm your email to start the test. Next, log in to your account and click "start a live test" button. The necessary tabs for testing are highlighted in the screenshot:. Enter the website link, click "Run Test" and get test results.
Saucelabs tests the compatibility not only on PC browsers but also on mobile devices. The service is paid, but there is a days trial access. After signing up and confirming your account, log in to your account. Next, select the "Live Testing" section in the upper left menu; in the next page, you need to enter the website URL and click the "Start Session" button in the lower right corner. NetRenderer is a free tool. It allows you to test the appearance of the site in Internet Explorer 11, 10, 9, 8, 7, 6 or 5.
Usually, the screenshot shows the very top of your web page. If you want to see what the page looks like in the bottom, just select the vertical offset in the field after the URL and click Render. In a few seconds, you will get a screenshot of your web page. Browsera notifies you of troublesome browser versions for your website. Instead of checking each screenshot yourself, here you will get a report with a detailed description of pages that have potential issues.
You will get a snapshot of your web page in a few seconds. Browsera runs as a tester and looks for visual discrepancies between different browsers. Each time Browsera loads the page, the service checks to see if the browser has detected any script errors. For instance, JavaScript errors can lead to a loss of website functionality. The tool is paid, but it has a days money-back guarantee. See the report with highlighted troublesome areas in the screenshot below:.
Cross-browser compatibility is the visual identity of a web resource in different browsers and versions. The awkward appearance of the website pushes users away, which has a negative impact on behavioral factors and SEO. A number of automatic services allow you to test cross-browser compatibility; some of them are paid, but most have trial access period. In this article, we reviewed several testers:.
You can also perform manual testing. For this, check which browsers your visitors use through Google Analytics, and open your website in all of these browsers one by one. This article is a part of Serpstat's Checklist tool. Checklist is a ready-to-do list that helps to keep reporting of the work progress on a specific project. The tool contains templates with an extensive list of project development parameters where you can also add your own items and plans. Learn how to get the most out of Serpstat Want to get a personal demo, trial period or bunch of successful use cases?
Send a request and our expert will contact you ;. Rate the article on a five-point scale The article has already been rated by 4 people on average 4. Recommended posts. Denys Kondak. Share this article with your friends. Sign In Free Sign Up. Sign in with Google Sign up with Google. On a PC, default submit buttons are square and pretty flat looking, on a Mac the default submit buttons are nicely shaded ovals with a gradient. For example, a submit button can look like a gray rectangle on your Windows Classic theme, and like an oval if you use the XP style.
As a workaround, you can create custom buttons for your website. Display resolution is affecting quite a lot the way a website is displayed. To fix this, you should not use static dimensions for your website, i. This will not fix all issues but at least will make the page fit into the screen.
Why does my website look different on different browsers?
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