JavaScript Start-Up Performance

Addy Osmani:

Smaller JavaScript bundles generally do result in a faster load time (regardless of our browser, device & network connection) but 200KB of our JS !== 200KB of someone else's and can have wildly different parse and compile numbers.

Using file size as a metric isn't an awful crime, because it does matter, but it's only part of the JavaScript performance story.

I also found the overview of the discussion of bytecode interesting. Browsers download JavaScript, parse it, turn …

JavaScript Start-Up Performance is a post from CSS-Tricks