请问这里哪里出问题了
照着视频完成的，但最后怎么刷新都是显示这个，请问是哪里出问题了
html文件：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Countdown</title> <link rel="stylesheet" href="./style/style.css"> </head> <body> <canvas id="countdown"> 当前浏览器不支持Canvas，请更换浏览器后再试 </canvas> <script type="text/javascript" src="Countdown-digit.js"></script> <script type="text/javascript" src="Countdown.js"></script> </body> </html>
Countdown-digit.js文件：
// 存放模型 digit = [ [ [0, 0, 1, 1, 1, 0, 0], [0, 1, 1, 0, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 0, 1, 1, 0], [0, 0, 1, 1, 1, 0, 0] ], //0 [ [0, 0, 0, 1, 1, 0, 0], [0, 1, 1, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [1, 1, 1, 1, 1, 1, 1] ], //1 [ [0, 1, 1, 1, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 1, 1, 0, 0, 0], [0, 1, 1, 0, 0, 0, 0], [1, 1, 0, 0, 0, 0, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 1, 1, 1, 1, 1] ], //2 [ [1, 1, 1, 1, 1, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 1, 1, 1, 0, 0], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 1, 1, 0] ], //3 [ [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 1, 0], [0, 0, 1, 1, 1, 1, 0], [0, 1, 1, 0, 1, 1, 0], [1, 1, 0, 0, 1, 1, 0], [1, 1, 1, 1, 1, 1, 1], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 1, 1] ], //4 [ [1, 1, 1, 1, 1, 1, 1], [1, 1, 0, 0, 0, 0, 0], [1, 1, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 0], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 1, 1, 0] ], //5 [ [0, 0, 0, 0, 1, 1, 0], [0, 0, 1, 1, 0, 0, 0], [0, 1, 1, 0, 0, 0, 0], [1, 1, 0, 0, 0, 0, 0], [1, 1, 0, 1, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 1, 1, 0] ], //6 [ [1, 1, 1, 1, 1, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 0, 1, 1, 0, 0], [0, 0, 1, 1, 0, 0, 0], [0, 0, 1, 1, 0, 0, 0], [0, 0, 1, 1, 0, 0, 0], [0, 0, 1, 1, 0, 0, 0] ], //7 [ [0, 1, 1, 1, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 1, 1, 0] ], //8 [ [0, 1, 1, 1, 1, 1, 0], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [1, 1, 0, 0, 0, 1, 1], [0, 1, 1, 1, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 0, 1, 1], [0, 0, 0, 0, 1, 1, 0], [0, 0, 0, 1, 1, 0, 0], [0, 1, 1, 0, 0, 0, 0] ], //9 [ [0, 0, 0, 0], [0, 0, 0, 0], [0, 1, 1, 0], [0, 1, 1, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 1, 1, 0], [0, 1, 1, 0], [0, 0, 0, 0], [0, 0, 0, 0] ] //: ];
Countdown.js文件
var radius = 8;
var margin_top = 60;
var margin_left = 30;
const endTime = new Date(2019, 7, 14, 22, 04, 52);
var currentShowTimeSeconds = 0;
window.onload = function() {
var countdown = document.getElementById("countdown");
countdown.width = 1000;
countdown.height = 700;
if (countdown.getContext("2d")) {
var context = countdown.getContext("2d");
} else {
alert("当前浏览器不支持Canvas，请更换浏览器后再试");
}
currentShowTimeSeconds = getCurrentShowTimeSeconds();
render(context);
}
function getCurrentShowTimeSeconds() {
var currentTime = new Date();
var ret = endTime.getTime() - currentTime.getTime();
ret = Math.round(ret / 1000);
return ret >= 0 ? ret : 0;
}
function render(context) {
var hours = parseInt(currentShowTimeSeconds / 3600);
var minutes = parseInt((currentShowTimeSeconds - hours * 3600) / 60);
var seconds = currentShowTimeSeconds % 60;
renderDigit(margin_left, margin_top, parseInt(hours / 10), context);
renderDigit(margin_left + 15 * (radius + 1), margin_top, parseInt(hours % 10), context);
renderDigit(margin_left + 30 * (radius + 1), margin_top, 10, context);
renderDigit(margin_left + 39 * (radius + 1), margin_top, parseInt(minutes / 10), context);
renderDigit(margin_left + 54 * (radius + 1), margin_top, parseInt(minutes % 10), context);
renderDigit(margin_left + 69 * (radius + 1), margin_top, 10, context);
renderDigit(margin_left + 78 * (radius + 1), margin_top, parseInt(seconds / 10), context);
renderDigit(margin_left + 93 * (radius + 1), margin_top, parseInt(seconds % 10), context);
}
function renderDigit(x, y, num, context) {
context.fillStyle = "rgb(0, 102, 153)";
for (var i = 0; i < digit[num].length; i++) {
for (var j = 0; j < digit[num][i].length; j++) {
if (digit[num][i][j] == 1) {
context.beginPath();
// 第(i,j)个圆的圆心位置
context.arc(x + j * 2 * (radius + 1) + (radius + 1), y + i * 2 * (radius + 1) + (radius + 1), radius, 0, 2 * Math.PI);
context.closePath();
context.fill();
}
}
}
}
