[pjmlp]

It got outcompeted by Flash, JavaScript had zero to do with it.

Had Apple not forbidden Flash on iOS, there would be no JavaScript superiority to talk about.

[ZenPsycho]

I invite you to try your favourite flash website in Puffin browser to see how "great" an experience flash on an iphone is.

[pjmlp]

Surely not worse than what JavaScript is.

Thankfully on Android and WP devices I was able to take the battery out, when the web site developer got too creative for the device's CPU/GPU.