As the world build sites that are more heavily reliant on JavaScript, we sometimes pay for what we send down in ways that we can’t always easily see.
Addy Osmani explains how and why JavaScript is the most expensive resource your site uses today—especially on mobile. Addy also shares tips for fixing JavaScript performance issues so everything loads quicker. A little discipline can help if you want your site to load and be interactive as soon as possible on mobile.
Slides: https://speakerdeck.com/addyosmani/the-cost-of-javascript-in-2019
If you prefer reading articles: https://v8.dev/blog/cost-of-javascript-2019
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9 responses to “Addy Osmani :: The Cost of JavaScript :: #PerfMatters Conference 2019”
Thank you Addy!
This is a really informative Talk. Enables me to re-think my actions and encourages me to align my web executions with browser's capabilities and to make sure I'm maximising my usage of its potential. Will share this with as many people I know from the world of web. Excellent 30 minutes !
Man every webdev who doesn't already consider this should spend the 30 minutes to understand its implications.
measure, optimize, monitor 🙂
Interesting, but hasn't he got the meaning of "coarse" wrong? 😀
Been always blaming PHP, and TIL, so it actually sits on the server-side just waiting for JavaScript to load those threads. Powerful insights that goes over what makes JavaScript an expensive web resource if not utilized properly. Learnt something on web performance!
Can't wait to repost this video on my bum-ass blog that runs all kinds of marketing and tracking scripts
Awesome presentation! Very much informative with great insights for a web developer to keep in mind. Thank you!
Great talk as always from Addy.