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Measuring Network Performance in Mobile Safari

CSS Wizardry

Every browser available on iOS is simply a wrapper around Safari. Network Link Conditioner. In there, you should find a tool called Network Link Conditioner. This provides us with very accurate network throttling via a number of handy presets, or you can configure your own. Why This Is a Problem. Chrome for iOS?

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How To Optimize Progressive Web Apps: Going Beyond The Basics

Smashing Magazine

You can find a comprehensive Beginner’s Guide To Progressive Web Apps on Smashing Magazine that focuses on building the core of PWAs. Code My UI has some excellent code snippets available that you can use to create a skeleton screen for your PWA. Optimizing Based On Network Usage. Cache first, then network.

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Understanding Weak Reference In JavaScript

Smashing Magazine

The code below illustrates how to use WeakSet() and some of the methods available: const human = new WeakSet(); let paul = {name: "Paul"}; let mary = {gender: "Mary"}; // Add the human with the name paul to the classroom. let smashing = {name: "magazine"}; let arr = [smashing]; // Overwrite the reference. It cannot be looped through.

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Optimizing Video For Size And Quality

Smashing Magazine

A video with large dimensions or a high bitrate will take longer to download and will require a higher speed network to play back smoothly. This leads to longer startup times, and if the network cannot supply the video fast enough, the video will stall during video playback. There is a solution though! Large preview ).

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Let’s Dive Into Cypress For End-to-End Testing

Smashing Magazine

Cypress provides some prewritten sample tests to showcase its features and give you some starting points — this is the reason for the tests that are available. However, due to run times, it is not advisable to cover every single available workflow. Example: Finding My Articles in Smashing Magazine. Large preview ).

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Why Optimizing Your Lighthouse Score Is Not Enough For A Fast Website

Smashing Magazine

It’s unlikely that your throttled conditions match the connection speeds of an average real user on the website, as they may have a faster network connection or run on a slower CPU. What Lighthouse provides is more like “on-demand” testing that’s immediately available. I emphasized the important part.

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How To Build Resilient JavaScript UIs

Smashing Magazine

Lots can go wrong: a network request fails, a third-party library breaks, a JavaScript feature is unsupported (assuming JavaScript is even available), a CDN goes down, a user behaves unexpectedly (they double-click a submit button), the list goes on. Both examples check something is available before using it. Callum Hart.

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