When implemented well, it incurs little development overhead and can save time. Progressive Enhancement makes sense for content sites and online stores which need to reach the widest possible audience. That’s a decision for you and the application you’re building. Is Progressive Enhancement Worth the Effort? Importantly, everyone receives something and the site/app remains usable for everyone. Those running Opera Mini on a two year-old mobile may receive a basic styled page. Those using the latest Chrome on a desktop may get the highest level of functionality. Users can receive a different experience. load polyfills which implement identical functionality.avoid running code which would result in an error, or.

Your JavaScript can detect when APIs/facilities are available to: You create the simplest HTML-only experience then enhance it with images, fonts, CSS and JavaScript when those files successfully download and execute.

The solution continues to be Progressive Enhancement. These issues are especially prevalent in the mobile world where a user could be travelling, using a less powerful device, connecting via a slow network, using flaky airport wifi, etc.

another script raises an error which stops all scripts executing.

the browser didn’t support the code or facilities you require.

a browser plugin intercepted or modified the script.

the service provider blocked or modified the script.

JavaScript is fragile your scripts can break for reasons including: It’s tempting to think those users deserve everything they (don’t) get, but the reality is more problematic.

Can You Support Those Without JavaScript?įew people actively disable scripting.

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