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HTML

              
                <h1>The Great 
<br>
<span id="colorDisplay">RGB</span> 
<br>
Color Game</h1>

<div id ="stripe">
	<button id="reset">New Colors</button>
	<span id="message"></span>
	<button class="mode">Easy</button>
	<button class="mode selected" class="selected">Hard</button>
</div>

	<div id="container">
		<div class="square"></div>
		<div class="square"></div>
		<div class="square"></div>
		<div class="square"></div>
		<div class="square"></div>
		<div class="square"></div>
	</div>

              
            
!

CSS

              
                body {
	background-color: #232323;
	margin: 0;
	font-family: "Montserrat", "Avenir", "sans serif";
}

.square {
	width: 30%;
	background: purple;
	padding-bottom: 30%;
	float: left;
	margin: 1.66%;
	border-radius: 15%;
	transition: background 0.6s;
	-webkit-transition: background 0.6s;
	-moz-transition: background 0.6s;
}

#container {
	margin: 20px auto;
	max-width: 600px;
}

h1 { 
 line-height: 1.1;
 text-align: center;
 color: white;
 background: steelblue;
 margin: 0;
 font-weight: normal;
 text-transform: uppercase;
 padding: 20px 0;
}

#colorDisplay {
	font-size: 200%;
}

#message {
	display: inline-block;
	width: 20%;
}

#stripe {
	background: white;
	height: 30px;
	text-align: center;
	color: black;
}

.selected {
	color: white;
	background: steelblue;
}

button {
	border: none;
	background: none;
	text-transform: uppercase;
	height: 100%;
	font-weight: 700;
	color: steelblue;
	letter-spacing: 1px;
	font-size: inherit;
	transition: all 0.3s;
	-webkit-transition: all 0.6s;
	-moz-transition: all 0.6s;
	outline: none;
}

button:hover {
	color: white;
	background: steelblue;

}
              
            
!

JS

              
                var numSquares = 6;
var colors = [];
var pickedColor;
var squares = document.querySelectorAll(".square");
var colorDisplay = document.getElementById("colorDisplay");
var messageDisplay = document.querySelector("#message");
var h1 = document.querySelector("h1");
var resetButton = document.querySelector("#reset");
var modeButtons = document.querySelectorAll(".mode");

init();

function init() {
	setupModeButtons();
	setupSquares();
	reset();
}

function setupModeButtons() {
	for(var i = 0; i < modeButtons.length; i++) {
		modeButtons[i].addEventListener("click", function() {
			modeButtons[0].classList.remove("selected");
			modeButtons[1].classList.remove("selected");
			this.classList.add("selected");
			if(this.textContent === "Easy") {
				numSquares = 3;
			} else {
				numSquares = 6;
			}
			reset();
			//figure out how many squares to show
			//pick new colors 
			//pick a new picked color
			//update page to reflect changes
		});
	}
}

function setupSquares() {
	for(var i = 0; i < squares.length; i++) {
		//add initial colors to squares
		squares[i].style.background = colors[i];

		//add click listeners to squares
		squares[i].addEventListener("click", function() {
			//grab color of picked square
			var clickedColor = this.style.background;

			//compare color to clicked square
			if (clickedColor === pickedColor) {
				messageDisplay.textContent = "Correct!";
				resetButton.textContent = "Play Again?";
				changeColors(clickedColor);
				h1.style.background = pickedColor;
			} else {
				this.style.background = "#232323";
				messageDisplay.textContent = "Try Again!";
			}
		})
	}
}

function reset() {
	//generate all new colors
	colors = generateRandomColors(numSquares);
	//pick a new random color from array
	pickedColor = pickColor();
	//change colorDisplay to match picked color
	colorDisplay.textContent = pickedColor;
	resetButton.textContent = "New Colors";
	//clear 'correct' message
	messageDisplay.textContent = "";
	//change colors in squares
	for(var i = 0; i < squares.length; i++) {
		if (colors[i]) {
		squares[i].style.display = "block";
		squares[i].style.background = colors[i];
		} else {
			squares[i].style.display = "none";
		}
	}
	h1.style.background = "steelblue";
	resetButton.textContent = "New Colors"
}


resetButton.addEventListener("click", function() {
	reset();
})

function changeColors(color) {
	//loop through all squares
	for(var i = 0; i < squares.length; i++) {
		//change color to match given color
		squares[i].style.background = color;
	}
}

function pickColor() {
	var random = Math.floor(Math.random() * colors.length);
	return colors[random];
}

function generateRandomColors(num) {
//make an array
	var arr = [];
//add num random colors to array
//repeat num times
	for (var i = 0; i < num; i++) {
		//get random color and push into array
		arr.push(randomColor());
	}
//return that array
	return arr;
}

function randomColor() {
	//pick a 'red' from 0 - 255
	var r = Math.floor(Math.random() * 256)
	//pick a 'green' from 0 - 255
	var g = Math.floor(Math.random() * 256)
	//pick a 'blue' from 0 - 255
	var b = Math.floor(Math.random() * 256)
	//concat
	return "rgb(" + r + ", " + g + ", " + b + ")";
}
              
            
!
999px

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