colorGame.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() {
	//mode buttons event listener
	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();
		});
	}
}

function setUpSquares() {
	for (var i = 0; i < squares.length; i++) {
		//add click listeners to squares
		squares[i].addEventListener("click", function () {
			//grab color to clicked square
			var clickedColor = this.style.background;

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

function reset() {
	//change h1 background to default
	h1.style.background = "#4682b4";
	resetButton.textContent = "New Colors";
	messageDisplay.textContent = "";
	//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;
	//change colors of 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";
		}
	}
}

//easyBtn.addEventListener("click", function() {
//	easyBtn.classList.add("selected");
//	hardBtn.classList.remove("selected");
//	numSquares = 3;
//	colors = generateRandomColors(numSquares);
//	pickedColor = pickColor();
//	colorDisplay.textContent = pickedColor;
//	for(var i=0; i<squares.length; i++) {
//		if(colors[i]) {
//			squares[i].style.background = colors[i];
//		} else {
//			squares[i].style.display = "none";
//		}
//	}
//});
//
//hardBtn.addEventListener("click", function() {
//	hardBtn.classList.add("selected");
//	easyBtn.classList.remove("selected");
//	numSquares = 6
//	colors = generateRandomColors(numSquares);
//	pickedColor = pickColor();
//	colorDisplay.textContent = pickedColor;
//	for(var i=0; i<squares.length; i++) {
//			squares[i].style.background = colors[i];
//			squares[i].style.display = "block";
//	}
//});

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

function changeColors(color) {
	//loop through all squares
	for (var i = 0; i < squares.length; i++) {
		//change each color to math 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 = [];
	//repeat num times
	for (var i = 0; i < num; i++) {
		//get random color and push into arr
		arr.push(randomColor());
	}
	//retun 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);
	return "rgb(" + r + ", " + g + ", " + b + ")";
}