For example, you could try to build a progressive web app with service workers. But before registering a service worker. You should check if the service worker API is available. That way you won’t end up with an error if it is. Progressive enhancement doesn’t mean you can’t use JavaScript. But you do need to define your support base for your website or app. And build enhancements and features from there. What core functionality needs to happen and can it with or without JavaScript? If you decide that your website or application can’t run without JavaScript. That’s fine But be sure to consider what the support. Baseline is when doing so, and build for such a scenario.
Improve performance and accessibility with incremental enhancements As I mentioned before, today’s websites are bigger than ever. The average web page today has around 2.35MB of downloadable resources, according to the HTTP Archive, a site that tracks website performance and the technologies they use. It has been said that the next billion people who connect to the Saudi Arabia Email Database Internet will use the web almost exclusively through smartphones. So we need to understand how to cater to mobile and more specifically mobile offline when we think about emerging markets. This is where performance and accessibility, as far as progressive enhancement is concerned, become not only imperative, but necessary. Performance for growing websites Faster websites = higher conversions.
Progressive Enhancement Layers
so performance is not a consideration but a requirement when building for eCommerce. When it comes to JavaScript, there are a ton of things you can and should consider to improve performance and the overall experience. What that means from a progressive enhancement perspective is that by thinking about how features improve our existing sites, we’re not just building for the long haul, but for performance as well. If you choose a support base, iterating and creating new features or enhancements is much easier. Consider preloading content for your user or preloading fonts. Feature Detection It’s also important to make sure that when we load scripts, we check to see if specific functions are available, so that we’re not loading scripts that will fail or not be used.
This is a way to improve performance through progressive enhancement. In a nutshell, we can use a simple approach to this type of development, first coined by the BBC as a way to easily separate support concerns between HTML4 browsers and HTML5 browsers. This allows us to provide an improved experience for those with newer browsers, using feature detection as a means of progressive improvement. if You may also be interested in: How to Optimize Themes for Performance. Keep accessibility at the forefront Accessibility from a progressive enhancement perspective starts with HTML. Using semantic markup from the start ensures that your site will not only work in any browser, but will also be understood by search engines and screen readers. HTML as the basis of accessibility.
Improve Performance and Accessibility
The magic of the web is that HTML just works because of its simplicity. Sir Tim Berners Lee, creator of the world wide web, called it the principle of least power. Even with well-tested code, which isn’t always the case, complicated programs written in JavaScript have more ways to fail. That’s because HTML and CSS are simply less complicated, because they’re declarative languages. You may also be interested in: Developing Shopify Themes with Accessibility in Mind . Accessibility is not just about supporting people with disabilities. With the use of alt tags and aria roles, it is more than that. Accessibility is about supporting everyone who uses the web, no matter what browsing technology they use. Accessibility Media Inquiries I’d argue that even using media queries helps broaden the scope of accessibility and ease of use across a multitude of devices for a variety of users.
