Experiment with a countdown timer that's precise no matter how slow/busy is the computer atm.
jQuery 2.1.3, HTML, CSS, JavaScript
D3 3.x, HTML, CSS, JavaScript
jQuery (edge), HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
jQuery 1.7.2, HTML, CSS, JavaScript
alphabet generator based on provided passphrase
jQuery 1.9.1, HTML, CSS, JavaScript
ref: http://ru.stackoverflow.com/questions/434891