[gcr]

Javascripters are beginning to rediscover some of these ideas in React.js.

I'm still waiting for them to rediscover continuations again. They have the "Callbacks aren't great" part down, but they still haven't pieced together the "Let's use continuations instead" part quite yet. Give it a year or two :)

[mej10]

Some Javascript developers would love to have support for first class continuations, but the Javascript engines would need to implement several changes to make them practical.

[gcr]

That's a good point. It's still a long ways away, and even if it were possible, continuations make it easy to shoot yourself in the foot.