Pattern Matching Pressed Keys

matching.js

var INPUTS = [0,0,0,0,0];

function loop ( ) {

	var pressed = [],
		released = [],
		keys;
	
	for ( var i = 0; i < INPUTS.length; i += 1 ) {
		// parsey stuff
		if ( INPUTS[ i ] ) {
			pressed.push(i)
		}else { 
			released.push(i);
		}
	}

	keys = Object.keys( pressed );

	if ( !!~pressed.indexOf(4) && keys.length === 2 ) {
		if ( !!~pressed.indexOf(2) ) {
			console.log( "two keys press", pressed, released)
		}
		return
	}
	console.log( pressed, released );
};

loop();
INPUTS = [0,1,1,0,1];
loop();
INPUTS = [0,0,1,0,1];
loop();
INPUTS = [1,0,0,0,0];
loop();