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HTML

              
                <html lang="en">
<head>
  	<meta charset="utf-8">
  	<title>Word Search!</title>
    <link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/css?family=Fresca">
    <link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/css?family=Happy+Monkey">
  	<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
</head>
<body>
	<div id="main">
		<div class="left">
      <div class="letters">
        <canvas id="a" width="800" height="800"></canvas>
        <canvas id="c" width="800" height="800"></canvas>
      </div>
    </div>
    <div class="right">
      <div class="words">
      </div>
  	</div>
  </div>
</body>
</html>
              
            
!

CSS

              
                * {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	-moz-box-sizing: border-box;
}

html {
	height: 100%;
	background: #999999;
	background: linear-gradient(bottom, #fff 70%, #bbb 100%);
	background-size: cover;
}

#main {
	width: 70em;
	height: 51em;
	margin: 10px auto;
	display: block;
}

.left {
	float: left;
	width: 820px;
	height: auto;
	border: 10px solid #9dd2ea;
	border-radius: 3px;

	box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
	-moz-box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
	-webkit-box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
}

.letters {
	font-size: 1.3em;
	font-family: 'Fresca', serif;
}

.letters span {
	float:left;
	width: 40px;
	height: 40px;

	background: white;
	line-height: 43px;
	text-align: center;

	font-size: 1em;

}

.right {
	float: right;
	width: 220px;
	height: auto;
	border: 10px solid #9dd2ea;
	border-radius: 3px;

	box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
	-moz-box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
	-webkit-box-shadow: 0 10px 6px -6px rgba(0,0,0,0.5);
}

.words {
	font-size: 1.3em;
	font-family: 'Fresca', serif;

}

.words span {
	float:left;
	width: 200px;
	height: 40px;

	background: white;
	line-height: 45px;
	text-align: center;


}

.blur {
	color: transparent;
   	text-shadow: 0 0 6px rgba(0,0,0,0.7);
}

.strike {
  text-decoration: line-through;
}

canvas {
	position: absolute;
	display: block;
	float: left;

}
              
            
!

JS

              
                var pos = [];
var click = { "startPos": "", "endPos": ""
			};
var letters = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
			   "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];

var words = [ { "word": "BUFFALO", "direction": "N", "start": 254 },
			  { "word": "LAKERS", "direction": "SE", "start": 2 },
			  { "word": "PRECIPITATE", "direction": "NE", "start": 323 },
			  { "word": "CALDRON", "direction": "S", "start": 39 },
			  { "word": "MISCIBLE", "direction": "NW", "start": 268 },
			  { "word": "AEON", "direction": "E", "start": 132 },
			  { "word": "SCRUTINY", "direction": "E", "start": 49 },
			  { "word": "CLEANERS", "direction": "S", "start": 137},
			  { "word": "SEETHING", "direction": "W", "start": 357 },
			  { "word": "MOTH", "direction": "E", "start": 383 },
			  { "word": "DOUBLE", "direction": "S", "start": 120 },
			  { "word": "CREATURE", "direction": "N", "start": 395 },
			  { "word": "GIPSY", "direction": "NW", "start": 340 },
			  { "word": "MOBILE", "direction": "W", "start": 98 },
			  { "word": "COMPUTER", "direction": "N", "start": 381 },
			  { "word": "THEWEB", "direction": "N", "start": 145 },
			  { "word": "HORSES", "direction": "E", "start": 6 },
			  { "word": "HICKORYJUMP", "direction": "NE", "start": 204 },
			  { "word": "CHROME", "direction": "NW", "start": 266},
			  { "word": "MULDER", "direction": "S", "start": 41 },
			];


// Prepare the wordsearch with random letters and word layout
$(document).ready(function() {
	// grab the size of the grid.  I used this method in case I need to 
	// scale this word search in the future
	var size = 400; //($(".left").css("width").slice(0, 3) - 20) / 2 ;

	// put random letters on the board
	for (var i = 0; i < size; i++) {
		$(".letters").append("<span class='" + (i + 1) + "'>" + 
							getRandomLetter() + "</span>");
	}

	// insert the words onto the board
	for (var i = 0; i < words.length; i++) {
		words[i].end = words[i].start;
		displayWord(words[i]);
		// save the start and end of each word for word checking later
		pos[i] = { "start": words[i].start, "end": words[i].end };
		$(".words").append("<span class='" + (i) + "'>" +  
							words[i].word + "</span>");	
	}

	$("#menu").on("mouseup", function() {
		$(this).css( {"display": "none"})
		$("#main").slideDown("slow", function() {
		})
	});
})

function getRandomLetter() {
	return letters[Math.floor(Math.random() * letters.length)];
}

function displayWord(w) {
	for (var j = 0; j < w.word.length; j++){
		if (w.direction == "N") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end -= 20;
		}
		if (w.direction == "NE") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end -= 19;
		}
		if (w.direction == "E") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end += 1;
		}
		if (w.direction == "SE") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end += 21;
		}
		if (w.direction == "S") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end += 20;
		}
		if (w.direction == "SW") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end += 19;
		}
		if (w.direction == "W") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end -= 1;
		}
		if (w.direction == "NW") {
			$(".letters").find("." + w.end).text(w.word[j]);
			if (j + 1 != w.word.length) w.end -= 21;
		}
	}
}


// start of x & y, end of x & y.  
var sX, sY, eX, eY, canvas, ctx, height, width, diff;
var r = 14;
var n = Math.sqrt((r * r) / 2);
var strokeColor = "black";
var isMouseDown = false;
var mouseMoved = false;

$(document).ready(function() {
	$("#c").on("mousedown mouseup mousemove mouseleave", function(e) {
		e.preventDefault();
		//console.log(e);
		if (e.type == "mousedown") {
			setCanvas("c");			
			isMouseDown = true;
      
      // Used for Firefox
			sX = e.offsetX || e.clientX - $(e.target).offset().left;
			sY = e.offsetY || e.clientY - $(e.target).offset().top;
			// adjust the center of the arc 
			sX -= (sX % 20);
			sY -= (sY % 20);
			if (!(sX % 40)) sX += 20;
			if (!(sY % 40)) sY += 20;

			setPos(sX, sY, "start");
			draw(e.type);
		} 
		else if (e.type == "mousemove") {
			if (isMouseDown) {
				mouseMoved = true;
				eX = e.offsetX || e.clientX - $(e.target).offset().left;
				eY = e.offsetY || e.clientY - $(e.target).offset().top;
				draw(e.type);
			}
		} 
		else if (e.type == "mouseup") {
			isMouseDown = false;
			ctx.clearRect(0, 0, width, height);
			if (mouseMoved) {
				mouseMoved = false;

				eX -= eX % 20;
				eY -= eY % 20;
				if (!(eX % 40)) eX += 20;
				if (!(eY % 40)) eY += 20;

				// draw the last line and clear the canvas to check and see if its the 
				// correct word
				draw(e.type);
				ctx.clearRect(0, 0, width, height);
				// if a correct word has been highlighted change the canvas to 
				// the permanent one and redraw the arcs and lines.  Then scratch the 
				// word on the right.
				if (checkWord()) {
					setCanvas("a");
					draw(e.type);
					scratchWord();
					// Check if the game is over
					if(isEndOfGame()) {
						alert("Good job!");
					}
				}

			}
		} 
		else if (e.type == "mouseleave") {
			isMouseDown = false;
			draw(e.type);
		}

	});
})

// This function is called when lines need to be drawn on the game
function draw(f) {
	// used to draw an arc.  takes in two numbers that represent the beginning
	// and end of the arc
	function drawArc(xArc, yArc, num1, num2) {
		ctx.lineWidth = 2;
		ctx.beginPath();
		ctx.arc(xArc, yArc, r, num1 * Math.PI, num2 * Math.PI);
		ctx.strokeStyle = strokeColor;
		ctx.stroke();
	}

	// used to draw the two lines around letters
	function drawLines(mX1, mY1, lX1, lY1, mX2, mY2, lX2, lY2) {
		ctx.beginPath();
		ctx.moveTo(mX1, mY1);
		ctx.lineTo(lX1, lY1);
		ctx.moveTo(mX2, mY2);
		ctx.lineTo(lX2, lY2);
		ctx.stroke();
	}
	// Check and see what event occured and create the action that belongs to that 
	// event.
	if (f == "mousedown"){
		ctx.clearRect(0, 0, width, height);
		drawArc(sX, sY, 0, 2);
	}
	else if (f == "mousemove" || f == "mouseup") {
		/* 
		This is to show the rise over run I used to get the limits for 
		all eight directions.  This tells the conditionals when to activiate
		the lines and in which direction.
		rise = (sY - eY) * Math.sqrt(6);
		run = sX - eX;
		 */	  
		limit = ((sY - eY) * Math.sqrt(6)) / (sX - eX);
		// UP
		if ((limit > 6 || limit < -6) && eY < sY) {
			// clear the canvas
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			drawArc(sX, sY, 0, 1); // draw bottom arc
			drawArc(sX, eY, 1, 2); // draw top arc

			// draw the two lines that connect the bottom and the top arcs
			drawLines(sX + r, sY, sX + r, eY, sX - r, sY, sX -r, eY);	

			// if the player is selecting this as the last letter set its position 
			// for wordcheck
			if (f == "mouseup") setPos(sX, eY, "end");	
		}
		// DOWN
		if ((limit < -6 || limit > 6) && eY > sY) {
			// clear the canvas
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			drawArc(sX, sY, 1, 2); 
			drawArc(sX, eY, 0, 1); 
			drawLines(sX + r, sY, sX + r, eY, sX - r, sY, sX -r, eY);
			if (f == "mouseup") setPos(sX, eY, "end");		
		}				
		// LEFT
		if ((limit < 1 && limit > -1) && eX < sX) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			drawArc(sX, sY, 1.5, 0.5);
			drawArc(eX, sY, 0.5, 1.5);
			drawLines(sX, sY - r, eX, sY -r, sX, sY + r, eX, sY + r);
			if (f == "mouseup") setPos(eX, sY, "end");
		}	
		// RIGHT
		if ((limit < 1 && limit > -1) && eX > sX) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			drawArc(sX, sY, 0.5, 1.5);
			drawArc(eX, sY, 1.5, 0.5);
			drawLines(sX, sY - r, eX, sY -r, sX, sY + r, eX, sY + r);
			if (f == "mouseup") setPos(eX, sY, "end");
		}
		/* 
		This is for the NW diagonal lines it requires a special number 
		n that is the adjacent lengths of a 45-45-90 triangle needed to draw these
		lines.  It also creates a diff for the difference between the 
		start and the end of the arcs 
		*/
		// NW
		if ((limit > 1 && limit < 6) && (eX < sX && eY < sY)) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			diff = sX - eX;
			drawArc(sX, sY, 1.75, 0.75);
			drawArc(sX - diff, sY - diff, 0.75, 1.75);
			drawLines(sX + n, sY - n, sX + n - diff, sY - n - diff, 
					  sX - n, sY + n, sX - n - diff, sY + n - diff);
			if (f == "mouseup") setPos(sX - diff, sY - diff, "end");
		} 

		// NE
		if ((limit < -1 && limit > -6) && (eX > sX && eY < sY)) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			diff = sX - eX;
			drawArc(sX, sY, 0.25, 1.25);
			drawArc(sX - diff, sY + diff, 1.25, 0.25);
			drawLines(sX + n, sY + n, sX + n - diff, sY + n + diff, 
					  sX - n, sY - n, sX - n - diff, sY - n + diff);
			if (f == "mouseup") setPos(sX - diff, sY + diff, "end");
		} 
		// SW
		if ((limit < -1 && limit > -6) && (eX < sX && eY > sY)) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			diff = sX - eX;
			drawArc(sX, sY, 1.25, 0.25);
			drawArc(sX - diff, sY + diff, 0.25, 1.25);
			drawLines(sX + n, sY + n, sX + n - diff, sY + n + diff, 
					  sX - n, sY - n, sX - n - diff, sY - n + diff);
			if (f == "mouseup") setPos(sX - diff, sY + diff, "end");
		} 
		// SE
		if ((limit > 1 && limit < 6) && (eX > sX && eY > sY)) {
			if (f == "mousemove") ctx.clearRect(0, 0, width, height);
			diff = sX - eX;
			drawArc(sX, sY, 0.75, 1.75);
			drawArc(sX - diff, sY - diff, 1.75, 0.75);
			drawLines(sX + n, sY - n, sX + n - diff, sY - n - diff, 
					  sX - n, sY + n, sX - n - diff, sY + n - diff);
			if (f == "mouseup") setPos(sX - diff, sY - diff, "end");
		} 
	}

	else if (f == "mouseleave") {
		setCanvas("c");
		ctx.clearRect(0,0,width,height);
	}
}


// change the canvas between the bottom and top layer
function setCanvas(id) {
	canvas = document.getElementById(id);
	ctx = canvas.getContext("2d");
	width = canvas.width;
	height = canvas.height;
}


// set the offsets to numbers that match the class names of each letter
function setPos(x, y, loc) {
	tX = Math.floor((x / 8) / 5 ) + 1;
	tY = Math.floor((y / 8) / 5 ) + 1;
	if (loc == "start") click.startPos = (tY - 1) * 20 + tX;
	else click.endPos = (tY - 1) * 20 + tX;
}


// verify if the word chosen is the correct one. If a player decides
// to highlight a word starting from last letter to first this function
// will also support that ability
function checkWord() {
	// clears the pos array so that a player cannot highlight the same word twice
	function clearPos(p) {
		p.start = p.end = 0;
		return true;
	}
	// user highlights from first letter to last
	if (pos.some(function(o) { return o.start === click.startPos &&
							   o.end === click.endPos && clearPos(o); })) {
		return true;
	}
	// if user highlights from last letter to first
	else if (pos.some(function(o) { return o.start === click.endPos &&
									o.end === click.startPos && clearPos(o); })) {
		return true;
	}
	else return false;
}

// scratch the word on the right out when the word is found on the left
function scratchWord() {
	for (var i = 0; i < words.length; i++) {
		if ((click.startPos === words[i].start && click.endPos === words[i].end) ||
			(click.startPos === words[i].end && click.endPos === words[i].start)) {
			// little hack here
			$(".words").find("." + i).addClass("strike");		
		}
	}
	// check if the game is over

}

function isEndOfGame(){
	return pos.every(function(o) { return o.start === 0 && o.end === 0; });
}
              
            
!
999px

Console