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BalfKeyBindA lightweight and flexible JavaScript library to bind key presses to events

BalfKeyBind is a pure JavaScript library that binds key presses.

Getting started

BalfKeyBind is extremely lightweight yet powerful, coming in at just under half a kilobyte in size when minified. Despite this, it works using a simple method that means that it doesn't add multiple event listeners - just one that deals with every key binding.

BalfKeyBind only features two functions: BalfKeyBind.Bind and BalfKeyBind.EnableTest.

The Bind function takes three arguments, namely: keyCode (number or string); modifiers (array) and func (function). The keyCode is obviously the number of the key that is to be pressed. modifiers array ([]) is a list of all modifiers as strings (ctrl, alt, shift) and the func is the function callback.

The EnableTest function is designed to enable test mode, basically any key presses are logged on the console so that it's easy to figure out the code. The function takes just one argument: t which is given a boolean value that states whether or not test mode is enabled.

JavaScript
//The use of the $ in front of BalfKeyBind is to prevent conflict with the global BalfKeyBind function
window.$BalfKeyBind = new BalfKeyBind();

Running the following script will then add a binding without any modifiers.

JavaScript
//This will produce a string of all cookies in use on this website
var key = prompt("Insert a key code now.");
window.$BalfKeyBind.Bind(key, [], function(e){
  alert("The key code string " + e + " was pressed.");
});

Running the following script will then add a binding with the control modifiers.

JavaScript
//This will produce a string of all cookies in use on this website
var key = prompt("Insert a key code now.");
window.$BalfKeyBind.Bind(key, ["ctrl"], function(e){
  alert("The key code string " + e + " was pressed.");
});

The following is the signature of the Bind function:

BalfKeyBind.Bind (string key, list modifiers, function action)
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