Chrome

Google Chrome Improves JavaScript Speeds Again

One of the old rules of optimizing website load times for all browsers was that the browser didn’t begin to parse the downloaded JavaScript until each file was downloaded. Starting with Chrome 41, Google has announced that this is no longer the case.

In this announcement, Google has said that new versions of Chrome will begin parsing JavaScript as it is downloaded to the browser, even before the particular file’s download is complete. However, in order to see this happen more quickly, you must utilize the async or deferred tags in the <script> tag. JavaScript that is loaded without async or deferred is still a completely blocking action that pauses all rendering while downloading and parsing the JavaScript files. According to Google, this can improve website load time by up to 10%.

Top 5 Reasons To Test Your Website Across Browsers

I would hope that those of you taking the time to read this posting would have some idea of why you should perform some level of testing of the software and websites you create. However, I am keenly aware that some management types don’t always understand the importance of testing until an untested “feature” appears in the wild, frustrating all that run across it.

1. Ensure Cross Browser Compatibility- Unless you develop a website for internal usage only, where you are able to successfully restrict users to a specific version of a specific browser, Cross Browser Compatibility ensures your site functions well for the greatest number of users.
2. Detect Shallow Errors - Simply loading a website for a quick look in all the major browsers allows you to find 95% of all the browser compatibility errors for your site.
3. Discover Performance Issues - Typically, older and less-advanced browsers, such as Internet Exporer, and the older versions of Chrome, Firefox, and Safari are unable to process the CSS, JavaScript, and HTML that the most recent and more-advanced versions of these browsers handle with ease.
4. Prioritize Backwards Compatibility - I have heard countless times that we need to make sure this website supports browser versions that were released more than a decade ago. Instead of just making excuses for why you can’t support them, testing your site in the older browsers first allows you to put a more accurate time estimate that supporting these browsers will require. Its amazing to see how the requirements for supporting old and outdated browsers evaporate as the time and cost estimates begin to add up.
5. CYA - Whether it is your internal customer that is requesting the new website or you are an agency working with another individual or business for a new website, the last thing you want to have happen is that the customer open the site when it goes live in a browser you have not tested yet and has major issues. Establish ahead of time what the list of supported browsers will be and make sure to test all of them. If you have time, test the next most popular browsers or versions of popular browsers.

While testing your website may not be the most exciting part of web development, it definitely will save you time and money in the long run.

Web Browser Font Rendering is the New Edge Case

In the early days of the web, designers and developers relied upon visitors to the sites they were developing to have their chosen font pre-installed on their computers so that their web browser of choice would be able to properly render the selected font. As quickly became obvious, there is a wide variety of fonts installed across all computers worldwide, so this was not an achievable scenario, especially when print level typography was desired. Unfortunately, at that time, the solution was to put all of the text in an image, ensuring the text would display exactly as the designer had specified, but hiding the same text from search engines and blind users.

Google Chrome Makes Web Developers Lazy

This post may make me sound ancient in the world of web development, but here it comes anyway.

Like Microsoft, Google has decided to implement functionality in their dominant browser that is incompatible with the other major competing browsers.

When I first started developing websites professionally, ensuring a website worked for 99% of the site’s visitors was easy, relatively, as you only needed to make sure the site worked in Internet Explorer 6. Obviously, there were a ton of random hacks and tricks required to deal with the quirks of this browser, but you were fairly safe knowing you had developed your site to be tailored to the browser of choice for your visitors. However, the dominance of Internet Explorer 6 was bound to come to an end and it ushered in an era of multiple popular browsers including Firefox and Chrome. With no single browser having a massive advantage in terms of users in all areas, web developers had to make sure that thorough testing of their sites was completed in each of the major browsers.

Window.Open Causes Browser Compatibilty Issues

One of the things that always annoys me as a web developer is when native browser functions that are accesible from JavaScript do not share the same function signature. One perfect example of this is the window.open function. When you are using non-Microsoft browsers such as Firefox and Chrome, you are able to make a call something like this window.open(url, 'window name', 'dimensions or other settings');. The window name parameter is important because it allows you to open multiple links in the same external window/tab. However, when using Internet Explorer, especially Internet Explorer 8 and older, you can only use window.open(url);. If you try to use the first type of function call, you get a very ambiguous error message in the browser that doesn’t tend to show exactly where the error occurred.

Google Analytics Site Speed is a bit Unreliable

Google Analytics will now allow site owners to track the performance of their websites with real live traffic. This is a nice feature that lets you understand just how long it takes for the average visitor to your site to see the fully complete version of your website. While this sounds like a great tool that will give you an accurate view of yoru website’s performance, it does not tell the full story. You can access the Site Speed section of Google Analyics under the Behavior>Site Speed>Overview section. Please be aware that not all visitors will send this information, so you will have to have a certain amount of traffic to your site before you will get any information in this section at all.