JavaScript is a dialect of the standardized ECMAScript programming language, primarily used for scripting web-pages. Use this tag for questions regarding ECMAScript and its dialects/ implementations: JavaScript, JScript, etc., excluding ActionScript.

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14
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5answers
2k views

What's the best way to load Javascript into a page to optimize performance?

Is there a way to load my JavaScript into a page that will make it load faster?
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2answers
3k views

What are the differences between Firefox's Javascript engine and Chrome's V8?

I've noticed that Chrome and Firefox take different amounts of time to render certain things. In general, Chrome has been faster. What should I know about both of them (and IE8/9, too, I guess) when ...
24
votes
4answers
3k views

Why insert static files (CSS, images, JavaScript, ECC) in a subdomain?

Why so many big and little sites inserts static files (CSS, images, JavaScript, ECC) in a subdomain like media.example.com or s2.static.example.com? What are the advantages? Why not just a directory ...
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votes
2answers
106 views

Browser privacy improvement implications for websites

On https://panopticlick.eff.org/ EFF let you test the number of uniquely identifying bits that the browser gives a website. Among these are HTTP header fields such as User-Agent, Accept, Accept-...