js-hotkeys is a jQuery plugin which enables you to create keyboard triggered events.

Update: The plugin is based on shortcut.js. You may want to use this for not being restricted with jQuery.

This is a very nice feature if you want to provide users more browsing flexibility. And also, it can be used in JavaScript testing environments like triggering a test function by clicking CTRL + t.

A simple usage of the plugin is:

$.hotkeys.add('Ctrl+a',function(){/*DO YOUR DUTY*/});
$.hotkeys.remove(’Ctrl+a’);

A demo of this jQuery keyboard control plugin can be found here.

Typing speed, if you are fast, is a value to thank for. Specially, for developers, this talent keeps the eye on the code so the concentration level never goes down by looking at the keyboard frequently.

If you are looking to improve your keyboard using skills, keybr, which is a web based keyboard practicing website can help you.

keybr has ready to use typing lessons and it lets you to use your own text too. While typing, you can see your typing speed and errors made + view the statistics as a chart.

keybr currently supports English, Geman, French, Spanish, Italian & Russian languages.