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var ua = navigator.userAgent; var wrong = 0; var op = ['+', '-', '*']; var op_id = 0; var n1; var n2; var answer; var score = 0; var hi_score = 0; function draw_canvas() { var drawingCanvas = document.getElementById('hang-math'); if (drawingCanvas.getContext) { var ctx = drawingCanvas.getContext('2d'); ctx.clearRect(0, 0, 600, 400); ctx.beginPath(); ctx.strokeStyle = "#865028"; ctx.lineWidth = 30; ctx.moveTo(150, 0); ctx.lineTo(150, 400); ctx.moveTo(150, 200); ctx.lineTo(300, 400); ctx.moveTo(150, 200); ctx.lineTo(300, 0); ctx.moveTo(150, 10); ctx.lineTo(450, 10); ctx.stroke(); ctx.beginPath(); ctx.lineWidth = 10; ctx.moveTo(450, 0); ctx.lineTo(450, 80); ctx.stroke(); ctx.strokeStyle = "#a17355"; ctx.lineWidth = 10; if (wrong >= 1) { ctx.beginPath(); ctx.arc(450, 80, 15, 0, Math.PI * 2, true); ctx.fillStyle = '#edd6c8'; ctx.fill(); ctx.stroke() } if (wrong >= 2) { ctx.beginPath(); ctx.moveTo(450, 90); ctx.lineTo(450, 160); ctx.stroke() } if (wrong >= 3) { ctx.beginPath(); ctx.moveTo(450, 120); ctx.lineTo(410, 100); ctx.stroke() } if (wrong >= 4) { ctx.beginPath(); ctx.moveTo(450, 120); ctx.lineTo(490, 100); ctx.stroke() } if (wrong >= 5) { ctx.beginPath(); ctx.moveTo(450, 155); ctx.lineTo(410, 200); ctx.stroke() } if (wrong >= 6) { ctx.beginPath(); ctx.moveTo(450, 155); ctx.lineTo(490, 200); ctx.stroke() } if (wrong >= 7) { ctx.beginPath(); ctx.moveTo(450, 180); ctx.lineTo(450, 190); ctx.stroke() } } } $(document).ready(function () { if (ua.match(/Firefox/i) != null) { $(".d").addClass("hack"); } var rand_no = Math.floor(3 * Math.random()); genEq(); draw_canvas(); $("#menu div").click(function (e) { $("#menu").css("display", "none"); $("#game").css("display", "block"); $("#error").css("display", "block"); addKeyCheck(); addAgain() }) }); function addAgain() { $("#again").click(function (e) { score = 0; wrong = 0; draw_canvas(); $("#again").css("display", "none"); $("#question").css("display", "block"); $("#error").html(""); $("#score").html(score) }) } function addKeyCheck() { $(this).keydown(function (e) { $("#error").html(""); var n = $("#answer").html(); var k = e.keyCode; if (k == 8) { $("#answer").html(n.substring(0, n.length - 1)); e.preventDefault() } else if (k == 13) { if (isNaN(n) || n == "") { $("#error").html("Invalid input") } else { var b = checkAnswer(n); if (!b) { wrong++; if (wrong > 6) { $("#question").css("display", "none"); $("#again").css("display", "block"); $("#error").html("Sorry, answer was " + answer + ". GAME OVER!!!"); if (score > hi_score) { hi_score = score; $("#hi_score").html(hi_score) } } else { $("#error").html("Sorry, answer was " + answer) } draw_canvas() } else { $("#error").html("You're a genius!!!"); score += 100; $("#score").html(score) } $("#answer").html(""); genEq() } } else if (k >= 48 && k <= 57) { $("#answer").html(n + (e.keyCode - 48).toString()) } else if (k == 189 || k == 109) { if (n.length == 0) { $("#answer").html(n + "-") } } }) } function checkAnswer(n) { n = parseInt(n); return (n == answer) } function genEq() { op_id = Math.floor(3 * Math.random()); n1 = Math.floor(50 * Math.random()); n2 = Math.floor(50 * Math.random()); switch (op_id) { case 0: answer = n1 + n2; break; case 1: answer = n1 - n2; break; case 2: answer = n1 * n2; break } $("#q").html(n1 + " " + op[op_id] + " " + n2 + " = ") }
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" lang="en-us"> <head> <meta charset="utf-8" /> <title>Hang Math</title> <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript" charset="utf-8"></script> </head> <body> <header> <h1><a href="">Hang Math</a></h1> </header> <section> <div id="menu"> <div style="width:250px; height:100px;">START</div> </div> <div id="error" style="display:none;"></div> <div id="game" style="display:none;"> <div id="question" class="d"> <h2> <span id="q">1 + 5 =</span> <span id="answer"></span> </h2> </div> <div id="again" style="display:none;" class="d"> <h2>PLAY AGAIN</h2> </div> <canvas id="hang-math" width="600" height="400" class="d"></canvas> </div> </section> <aside> <p>Score: <span id="score">0</span></p> <p>High Score: <span id="hi_score">0</span></p> </aside> <footer> <p> <a href="http://www.capcai.com" target="_blank">Brought to you by: Teguh Mualim</a> </p> </footer> </body> </html>
body, div, ul, ol, li, h1, h2, h3, p { margin:0; padding:0 } ul { list-style:none } h1, h2, h3 { font-size:100%; font-weight:bold } body { font:14px/23px Helvetica, Sans-serif; color:#FFF; background:#00ABEB } header h1 { color:#FFF; text-transform:uppercase; font-size:50px; line-height:60px; text-align:center; } h1 a { color:#FFF; text-decoration:none } header p { font-size:16px; text-align:center; } header p a { color:#FFF } section, div#menu { width:600px; margin:auto; padding:35px 0px 50px 0px; } aside { position:fixed; top:10px; right:80px; } #again { text-align:center; font-size:36px; margin:-70px 0px 50px 0px; } #game { position:fixed; bottom:100px; height:400px; width:600px; margin:auto; } #menu div { background:#5B2F0F; background:-webkit-gradient(linear, left top, left bottom, from(#865028), to(#5B2F0F)); background:-moz-linear-gradient(top, #865028, #5B2F0F); -webkit-border-radius:8px; -moz-border-radius:8px; border-radius:8px; -webkit-box-shadow:3px 3px 3px #361C09; -moz-box-shadow:3px 3px 3px #361C09; padding:10px; margin:50px auto; text-align:center; font-size:30px; line-height:100px; } #question { text-align:center; font-size:36px; margin:-70px 0px 50px 0px; } #question, #again { background:#5B2F0F; background:-webkit-gradient(linear, left top, left bottom, from(#865028), to(#5B2F0F)); background:-moz-linear-gradient(top, #865028, #5B2F0F); -webkit-border-radius:8px; -moz-border-radius:8px; border-radius:8px; -webkit-box-shadow:3px 3px 3px #361C09; -moz-box-shadow:3px 3px 3px #361C09; text-align:center; } #question #q, #again h2 { line-height:50px; } #error { position:fixed; top:65px; color:#C00; font-size:18px; font-weight:bold; } footer { background:#66CC00; background:-webkit-gradient(linear, left top, left bottom, from(#66CC00), to(#739509)); background:-moz-linear-gradient(top, #94B521, #739509); width:100%; height:100px; bottom:0; left:0; position:fixed; text-align:center; z-index:6 } footer p { margin-top:30px } footer a { color:#FFF } .hack { position:relative; left: 50%; }
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