Sine wave in the URL bar

sine.js

//Copy/paste into your console
(function() {
	var t = 0
	var values = []
	var msg = []

	function loop() {
	
		t++
	
		if( t % 3 === 0 ) {
			for( var i=0; i < 80; i++ ) {
		
				values[i] = Math.sin( (t + i) * 0.4 )
		
				var msg = values.map(function( v ) {
					if( v >= -1 && v < -0.66 ) {
						return "▁"
					} else if( v >= -0.66 && v < -0.33 ) {
						return "▃"
					} else if( v >= -0.33 && v < 0 ) {
						return "▅"
					} else if( v >= 0 && v < 0.33 ) {
						return "▆"
					} else if( v >= 0.33 && v < 0.66 ) {
						return "▇"
					} else {
						return "█"				
					}
				})		
			}
			window.history.replaceState( {} , 'wavey', msg.join('') )
		}
		requestAnimationFrame(loop)
	}

	loop()
})()